System.Core

Provides a safe handle that can be used by Cryptography Next Generation (CNG) objects.

Initializes a new instance of the class.

Releases a handle used by a Cryptography Next Generation (CNG) object.

true if the handle is released successfully; otherwise, false.

Releases a native handle used by a Cryptography Next Generation (CNG) object.

true if the handle is released successfully; otherwise, false.

Provides a safe handle that represents a key (NCRYPT_KEY_HANDLE).

Initializes a new instance of the class.

Provides a safe handle that represents a key storage provider (NCRYPT_PROV_HANDLE).

Initializes a new instance of the class.

Provides a safe handle that represents a secret agreement value (NCRYPT_SECRET_HANDLE).

Initializes a new instance of the class.

Represents a wrapper class for a pipe handle.

Initializes a new instance of the class.

An object that represents the pre-existing handle to use. true to reliably release the handle during the finalization phase; false to prevent reliable release (not recommended).

Encapsulates a method that takes no parameters and does not return a value.

Encapsulates a method that has two parameters and does not return a value.

The first parameter of the method that this delegate encapsulates. The second parameter of the method that this delegate encapsulates. The type of the first parameter of the method that this delegate encapsulates. The type of the second parameter of the method that this delegate encapsulates.

Encapsulates a method that takes three parameters and does not return a value.

The first parameter of the method that this delegate encapsulates. The second parameter of the method that this delegate encapsulates. The third parameter of the method that this delegate encapsulates. The type of the first parameter of the method that this delegate encapsulates. The type of the second parameter of the method that this delegate encapsulates. The type of the third parameter of the method that this delegate encapsulates.

Encapsulates a method that has four parameters and does not return a value.

The first parameter of the method that this delegate encapsulates. The second parameter of the method that this delegate encapsulates. The third parameter of the method that this delegate encapsulates. The fourth parameter of the method that this delegate encapsulates. The type of the first parameter of the method that this delegate encapsulates. The type of the second parameter of the method that this delegate encapsulates. The type of the third parameter of the method that this delegate encapsulates. The type of the fourth parameter of the method that this delegate encapsulates.

Encapsulates a method that has no parameters and returns a value of the type specified by the parameter.

The return value of the method that this delegate encapsulates. The type of the return value of the method that this delegate encapsulates.

Encapsulates a method that has one parameter and returns a value of the type specified by the parameter.

The return value of the method that this delegate encapsulates. The parameter of the method that this delegate encapsulates. The type of the parameter of the method that this delegate encapsulates. The type of the return value of the method that this delegate encapsulates.

Encapsulates a method that has two parameters and returns a value of the type specified by the parameter.

Encapsulates a method that has three parameters and returns a value of the type specified by the parameter.

The return value of the method that this delegate encapsulates. The first parameter of the method that this delegate encapsulates. The second parameter of the method that this delegate encapsulates. The third parameter of the method that this delegate encapsulates. The type of the first parameter of the method that this delegate encapsulates. The type of the second parameter of the method that this delegate encapsulates. The type of the third parameter of the method that this delegate encapsulates. The type of the return value of the method that this delegate encapsulates.

Encapsulates a method that has four parameters and returns a value of the type specified by the parameter.

The return value of the method that this delegate encapsulates. The first parameter of the method that this delegate encapsulates. The second parameter of the method that this delegate encapsulates. The third parameter of the method that this delegate encapsulates. The fourth parameter of the method that this delegate encapsulates. The type of the first parameter of the method that this delegate encapsulates. The type of the second parameter of the method that this delegate encapsulates. The type of the third parameter of the method that this delegate encapsulates. The type of the fourth parameter of the method that this delegate encapsulates. The type of the return value of the method that this delegate encapsulates.

The exception that is thrown when time zone information is invalid.

Initializes a new instance of the class with a system-supplied message.

Initializes a new instance of the class from serialized data.

The object that contains the serialized data. The stream that contains the serialized data. The parameter is null.-or-The parameter is null.

Initializes a new instance of the class with the specified message string.

A string that describes the exception.

Initializes a new instance of the class with a specified error message and a reference to the inner exception that is the cause of this exception.

A string that describes the exception. The exception that is the cause of the current exception.

Represents any time zone in the world.

Gets the time difference between the current time zone's standard time and Coordinated Universal Time (UTC).

A object that indicates the time difference between the current time zone's standard time and Coordinated Universal Time (UTC).

Clears cached time zone data.

Converts a time to the time in a particular time zone.

A value that represents the date and time in the destination time zone. The date and time to convert. The time zone to convert to. The value of the parameter represents an invalid time. The value of the parameter is null.

Converts a time from one time zone to another.

A value that represents the date and time in the destination time zone that corresponds to the parameter in the source time zone. The date and time to convert. The time zone of . The time zone to convert to. The property of the parameter is , but the parameter does not equal .-or-The property of the parameter is , but the parameter does not equal .-or-The parameter is an invalid time (that is, it represents a time that does not exist because of a time zone's adjustment rules). The parameter is null.-or-The parameter is null.

Converts a time to the time in a particular time zone.

A value that represents the date and time in the destination time zone. The date and time to convert. The time zone to convert to. The value of the parameter is null.

Converts a time to the time in another time zone based on the time zone's identifier.

A value that represents the date and time in the destination time zone. The date and time to convert. The identifier of the destination time zone. is null. The time zone identifier was found, but the registry data is corrupted. The process does not have the permissions required to read from the registry key that contains the time zone information. The identifier was not found on the local system.

Converts a time from one time zone to another based on time zone identifiers.

A value that represents the date and time in the destination time zone that corresponds to the parameter in the source time zone. The date and time to convert. The identifier of the source time zone. The identifier of the destination time zone. The property of the parameter does not correspond to the source time zone.-or- is an invalid time in the source time zone. is null.-or- is null. The time zone identifier was found, but the registry data is corrupted. The process does not have the permissions required to read from the registry key that contains the time zone information. The identifier was not found on the local system.-or-The identifier was not found on the local system. The user does not have the permissions required to read from the registry keys that hold time zone data.

Converts a time to the time in another time zone based on the time zone's identifier.

A value that represents the date and time in the destination time zone. The date and time to convert. The identifier of the destination time zone. is null. The time zone identifier was found but the registry data is corrupted. The process does not have the permissions required to read from the registry key that contains the time zone information. The identifier was not found on the local system.

Converts a Coordinated Universal Time (UTC) to the time in a specified time zone.

A value that represents the date and time in the destination time zone. Its property is if is ; otherwise, its property is . The Coordinated Universal Time (UTC). The time zone to convert to. The property of is . is null.

Converts the current date and time to Coordinated Universal Time (UTC).

A value that represents the Coordinated Universal Time (UTC) that corresponds to the parameter. The value's property is always set to . The date and time to convert. TimeZoneInfo.Local.IsInvalidDateTime() returns true.

Converts the time in a specified time zone to Coordinated Universal Time (UTC).

A object that represents the Coordinated Universal Time (UTC) that corresponds to the parameter. The object's property is always set to . The date and time to convert. The time zone of . .Kind is and does not equal .-or-.Kind is and does not equal .-or-.IsInvalidDateTime() returns true. is null.

Creates a custom time zone with a specified identifier, an offset from Coordinated Universal Time (UTC), a display name, and a standard time display name.

A object that represents the new time zone. The time zone's identifier. A object that represents the time difference between this time zone and Coordinated Universal Time (UTC). The display name of the new time zone. The name of the new time zone's standard time. The parameter is null. The parameter is an empty string ("").-or-The parameter does not represent a whole number of minutes. The parameter is greater than 14 hours or less than -14 hours. 2

Creates a custom time zone with a specified identifier, an offset from Coordinated Universal Time (UTC), a display name, a standard time name, a daylight saving time name, and daylight saving time rules.

A object that represents the new time zone. The time zone's identifier. A object that represents the time difference between this time zone and Coordinated Universal Time (UTC). The display name of the new time zone. The new time zone's standard time name. The daylight saving time name of the new time zone. An array of objects that augment the base UTC offset for a particular period. The parameter is null. The parameter is an empty string ("").-or-The parameter does not represent a whole number of minutes. The parameter is greater than 14 hours or less than -14 hours. The adjustment rules specified in the parameter overlap.-or-The adjustment rules specified in the parameter are not in chronological order.-or-One or more elements in are null.-or-A date can have multiple adjustment rules applied to it.-or-The sum of the parameter and the value of one or more objects in the array is greater than 14 hours or less than -14 hours. 2

Creates a custom time zone with a specified identifier, an offset from Coordinated Universal Time (UTC), a display name, a standard time name, a daylight saving time name, daylight saving time rules, and a value that indicates whether the returned object reflects daylight saving time information.

A object that represents the new time zone. If the parameter is true, the returned object has no daylight saving time data. The time zone's identifier. A object that represents the time difference between this time zone and Coordinated Universal Time (UTC). The display name of the new time zone. The standard time name of the new time zone. The daylight saving time name of the new time zone. An array of objects that augment the base UTC offset for a particular period. true to discard any daylight saving time-related information present in with the new object; otherwise, false. The parameter is null. The parameter is an empty string ("").-or-The parameter does not represent a whole number of minutes. The parameter is greater than 14 hours or less than -14 hours. The adjustment rules specified in the parameter overlap.-or-The adjustment rules specified in the parameter are not in chronological order.-or-One or more elements in are null.-or-A date can have multiple adjustment rules applied to it.-or-The sum of the parameter and the value of one or more objects in the array is greater than 14 hours or less than -14 hours. 2

Gets the localized display name for the current time zone's daylight saving time.

The display name for the time zone's localized daylight saving time.

Gets the localized general display name that represents the time zone.

The time zone's localized general display name.

Determines whether the current object and another object are equal.

true if the two objects are equal; otherwise, false. A second object to compare with the current object. 2

Retrieves a object from the registry based on its identifier.

A object whose identifier is the value of the parameter. The time zone identifier, which corresponds to the property. The system does not have enough memory to hold information about the time zone. The parameter is null. The time zone identifier specified by was not found. This means that a registry key whose name matches does not exist, or that the key exists but does not contain any time zone data. The process does not have the permissions required to read from the registry key that contains the time zone information. The time zone identifier was found, but the registry data is corrupted.

Deserializes a string to re-create an original serialized object.

A object. The string representation of the serialized object. The parameter is . The parameter is a null string. The source parameter cannot be deserialized back into a object.

Retrieves an array of objects that apply to the current object.

An array of objects for this time zone. The system does not have enough memory to make an in-memory copy of the adjustment rules. 2

Returns information about the possible dates and times that an ambiguous date and time can be mapped to.

An array of objects that represents possible Coordinated Universal Time (UTC) offsets that a particular date and time can be mapped to. A date and time. is not an ambiguous time. 2

Returns information about the possible dates and times that an ambiguous date and time can be mapped to.

An array of objects that represents possible Coordinated Universal Time (UTC) offsets that a particular date and time can be mapped to. A date and time. is not an ambiguous time. 2

Serves as a hash function for hashing algorithms and data structures such as hash tables.

A 32-bit signed integer that serves as the hash code for this object. 2

Returns a sorted collection of all the time zones about which information is available on the local system.

A read-only collection of objects. There is insufficient memory to store all time zone information. The user does not have permission to read from the registry keys that contain time zone information.

Calculates the offset or difference between the time in this time zone and Coordinated Universal Time (UTC) for a particular date and time.

A object that indicates the time difference between the two time zones. The date and time to determine the offset for.

Calculates the offset or difference between the time in this time zone and Coordinated Universal Time (UTC) for a particular date and time.

A object that indicates the time difference between Coordinated Universal Time (UTC) and the current time zone. The date and time to determine the offset for.

Indicates whether the current object and another object have the same adjustment rules.

true if the two time zones have identical adjustment rules and an identical base offset; otherwise, false. A second object to compare with the current object. The parameter is null.

Gets the time zone identifier.

The time zone identifier.

Determines whether a particular date and time in a particular time zone is ambiguous and can be mapped to two or more Coordinated Universal Time (UTC) times.

true if the parameter is ambiguous; otherwise, false. A date and time value. The property of the value is and is an invalid time. 2

Determines whether a particular date and time in a particular time zone is ambiguous and can be mapped to two or more Coordinated Universal Time (UTC) times.

true if the parameter is ambiguous in the current time zone; otherwise, false. A date and time. 2

Indicates whether a specified date and time falls in the range of daylight saving time for the time zone of the current object.

true if the parameter is a daylight saving time; otherwise, false. A date and time value. The property of the value is and is an invalid time.

Indicates whether a specified date and time falls in the range of daylight saving time for the time zone of the current object.

true if the parameter is a daylight saving time; otherwise, false. A date and time value.

Indicates whether a particular date and time is invalid.

true if is invalid; otherwise, false. A date and time value. 2

Gets a object that represents the local time zone.

A object that represents the local time zone.

Gets the localized display name for the time zone's standard time.

The localized display name of the time zone's standard time.

Gets a value indicating whether the time zone has any daylight saving time rules.

true if the time zone supports daylight saving time; otherwise, false.

Runs when the deserialization of an object has been completed.

The object that initiated the callback. The functionality for this parameter is not currently implemented. The object contains invalid or corrupted data.

Populates a object with the data needed to serialize the current object.

The object to populate with data. The destination for this serialization (see ). The parameter is null.

Converts the current object to a serialized string.

A string that represents the current object.

Returns the current object's display name.

The value of the property of the current object.

Gets a object that represents the Coordinated Universal Time (UTC) zone.

A object that represents the Coordinated Universal Time (UTC) zone.

Provides information about a time zone adjustment, such as the transition to and from daylight saving time.

Creates a new adjustment rule for a particular time zone.

A object that represents the new adjustment rule. The effective date of the adjustment rule. If the value of the parameter is DateTime.MinValue.Date, this is the first adjustment rule in effect for a time zone. The last date that the adjustment rule is in force. If the value of the parameter is DateTime.MaxValue.Date, the adjustment rule has no end date. The time change that results from the adjustment. This value is added to the time zone's property to obtain the correct daylight offset from Coordinated Universal Time (UTC). This value can range from -14 to 14. A object that defines the start of daylight saving time. A object that defines the end of daylight saving time. The property of the or parameter does not equal .-or-The parameter is equal to the parameter.-or-The or parameter includes a time of day value. is earlier than .-or- is less than -14 or greater than 14.-or-The property of the parameter is not equal to 0.-or-The property of the parameter does not equal a whole number of seconds.

Gets the date when the adjustment rule ceases to be in effect.

A value that indicates the end date of the adjustment rule.

Gets the date when the adjustment rule takes effect.

A value that indicates when the adjustment rule takes effect.

Gets the amount of time that is required to form the time zone's daylight saving time. This amount of time is added to the time zone's offset from Coordinated Universal Time (UTC).

A object that indicates the amount of time to add to the standard time changes as a result of the adjustment rule.

Gets information about the annual transition from daylight saving time back to standard time.

A object that defines the annual transition from daylight saving time back to the time zone's standard time.

Gets information about the annual transition from standard time to daylight saving time.

A object that defines the annual transition from a time zone's standard time to daylight saving time.

Determines whether the current object is equal to a second object.

true if both objects have equal values; otherwise, false. A second object. 2

Serves as a hash function for hashing algorithms and data structures such as hash tables.

A 32-bit signed integer that serves as the hash code for the current object. 2

Runs when the deserialization of a object is completed.

The object that initiated the callback. The functionality for this parameter is not currently implemented.

Populates a object with the data that is required to serialize this object.

The object to populate with data. The destination for this serialization (see ).

Provides information about a specific time change, such as the change from daylight saving time to standard time or vice versa, in a particular time zone.

Defines a time change that uses a fixed-date rule.

A object that contains data about the time change. The time at which the time change occurs. The month in which the time change occurs. The day of the month on which the time change occurs. The parameter has a non-default date component.-or-The parameter's property is not .-or-The parameter does not represent a whole number of milliseconds. The parameter is less than 1 or greater than 12.-or-The parameter is less than 1 or greater than 31.

Defines a time change that uses a floating-date rule.

A object that contains data about the time change. The time at which the time change occurs. The month in which the time change occurs. The week of the month in which the time change occurs. The day of the week on which the time change occurs. The parameter has a non-default date component.-or-The parameter does not represent a whole number of milliseconds.-or-The parameter's property is not . is less than 1 or greater than 12.-or- is less than 1 or greater than 5.-or-The parameter is not a member of the enumeration.

Gets the day on which the time change occurs.

The day on which the time change occurs.

Gets the day of the week on which the time change occurs.

The day of the week on which the time change occurs.

Determines whether an object has identical values to the current object.

true if the two objects are equal; otherwise, false. An object to compare with the current object. 2

Determines whether the current object has identical values to a second object.

true if the two objects have identical property values; otherwise, false. The second object. 2

Serves as a hash function for hashing algorithms and data structures such as hash tables.

A 32-bit signed integer that serves as the hash code for this object. 2

Gets a value indicating whether the time change occurs at a fixed date and time (such as November 1) or a floating date and time (such as the last Sunday of October).

true if the time change rule is fixed-date; false if the time change rule is floating-date.

Gets the month in which the time change occurs.

The month in which the time change occurs.

Determines whether two specified objects are equal.

true if and have identical values; otherwise, false. The first object. The second object.

Determines whether two specified objects are not equal.

true if and have any different member values; otherwise, false. The first object. The second object.

Runs when the deserialization of an object has been completed.

The object that initiated the callback. The functionality for this parameter is not currently implemented.

Populates a object with the data that is required to serialize this object.

The object to populate with data. The destination for this serialization (see ).

Gets the hour, minute, and second at which the time change occurs.

A value that indicates the time of day at which the time change occurs.

Gets the week of the month in which a time change occurs.

The week of the month in which the time change occurs.

The exception that is thrown when a time zone cannot be found.

Initializes a new instance of the class with a system-supplied message.

Initializes a new instance of the class from serialized data.

The object that contains the serialized data. The stream that contains the serialized data. The parameter is null.-or-The parameter is null.

Initializes a new instance of the class with the specified message string.

A string that describes the exception.

Initializes a new instance of the class with a specified error message and a reference to the inner exception that is the cause of this exception.

A string that describes the exception. The exception that is the cause of the current exception.

Represents a set of values.

The type of elements in the hash set.

Initializes a new instance of the class that is empty and uses the default equality comparer for the set type.

Initializes a new instance of the class that uses the default equality comparer for the set type, contains elements copied from the specified collection, and has sufficient capacity to accommodate the number of elements copied.

The collection whose elements are copied to the new set. is null.

Initializes a new instance of the class that uses the specified equality comparer for the set type, contains elements copied from the specified collection, and has sufficient capacity to accommodate the number of elements copied.

The collection whose elements are copied to the new set. The implementation to use when comparing values in the set, or null to use the default implementation for the set type. is null.

Initializes a new instance of the class that is empty and uses the specified equality comparer for the set type.

The implementation to use when comparing values in the set, or null to use the default implementation for the set type.

Initializes a new instance of the class with serialized data.

A object that contains the information required to serialize the object. A structure that contains the source and destination of the serialized stream associated with the object.

Adds the specified element to a set.

true if the element is added to the object; false if the element is already present. The element to add to the set.

Removes all elements from a object.

Gets the object that is used to determine equality for the values in the set.

The object that is used to determine equality for the values in the set.

Determines whether a object contains the specified element.

true if the object contains the specified element; otherwise, false. The element to locate in the object.

Copies the elements of a object to an array.

The one-dimensional array that is the destination of the elements copied from the object. The array must have zero-based indexing. is null.

Copies the elements of a object to an array, starting at the specified array index.

The one-dimensional array that is the destination of the elements copied from the object. The array must have zero-based indexing. The zero-based index in at which copying begins. is null. is less than 0. is greater than the length of the destination .-or- is larger than the size of the destination .

Copies the specified number of elements of a object to an array, starting at the specified array index.

The one-dimensional array that is the destination of the elements copied from the object. The array must have zero-based indexing. The zero-based index in at which copying begins. The number of elements to copy to . is null. is less than 0.-or- is less than 0. is greater than the length of the destination .-or- is greater than the available space from the to the end of the destination .

Gets the number of elements that are contained in a set.

The number of elements that are contained in the set.

Returns an object that can be used for equality testing of a object.

An object that can be used for deep equality testing of the object.

Removes all elements in the specified collection from the current object.

The collection of items to remove from the object. is null.

Returns an enumerator that iterates through a object.

A object for the object.

Implements the interface and returns the data needed to serialize a object.

A object that contains the information required to serialize the object. A structure that contains the source and destination of the serialized stream associated with the object. is null. 2

Modifies the current object to contain only elements that are present in that object and in the specified collection.

The collection to compare to the current object. is null.

Determines whether a object is a proper subset of the specified collection.

true if the object is a proper subset of ; otherwise, false. The collection to compare to the current object. is null.

Determines whether a object is a proper superset of the specified collection.

true if the object is a proper superset of ; otherwise, false. The collection to compare to the current object. is null.

Determines whether a object is a subset of the specified collection.

true if the object is a subset of ; otherwise, false. The collection to compare to the current object. is null.

Determines whether a object is a superset of the specified collection.

true if the object is a superset of ; otherwise, false. The collection to compare to the current object. is null.

Implements the interface and raises the deserialization event when the deserialization is complete.

The source of the deserialization event. The object associated with the current object is invalid. 2

Determines whether the current object and a specified collection share common elements.

true if the object and share at least one common element; otherwise, false. The collection to compare to the current object. is null.

Removes the specified element from a object.

true if the element is successfully found and removed; otherwise, false. This method returns false if is not found in the object. The element to remove.

Removes all elements that match the conditions defined by the specified predicate from a collection.

The number of elements that were removed from the collection. The delegate that defines the conditions of the elements to remove. is null.

Determines whether a object and the specified collection contain the same elements.

true if the object is equal to ; otherwise, false. The collection to compare to the current object. is null.

Modifies the current object to contain only elements that are present either in that object or in the specified collection, but not both.

The collection to compare to the current object. is null.

Adds an item to an object.

The object to add to the object. The is read-only.

Gets a value indicating whether a collection is read-only.

true if the collection is read-only; otherwise, false.

Returns an enumerator that iterates through a collection.

An object that can be used to iterate through the collection.

Returns an enumerator that iterates through a collection.

An object that can be used to iterate through the collection.

Sets the capacity of a object to the actual number of elements it contains, rounded up to a nearby, implementation-specific value.

Modifies the current object to contain all elements that are present in both itself and in the specified collection.

The collection to compare to the current object. is null.

Enumerates the elements of a object.

Gets the element at the current position of the enumerator.

The element in the collection at the current position of the enumerator.

Releases all resources used by a object.

Advances the enumerator to the next element of the collection.

true if the enumerator was successfully advanced to the next element; false if the enumerator has passed the end of the collection. The collection was modified after the enumerator was created.

Gets the element at the current position of the enumerator.

The element in the collection at the current position of the enumerator, as an . The enumerator is positioned before the first element of the collection or after the last element.

Sets the enumerator to its initial position, which is before the first element in the collection.

The collection was modified after the enumerator was created.

Directs tracing or debugging output of end-to-end events to an XML-encoded, schema-compliant log file.

Initializes a new instance of the class, using the specified file as the recipient of debugging and tracing output.

The path for the log file. 2

Initializes a new instance of the class with the specified name, using the specified file as the recipient of debugging and tracing output.

The path for the log file. The name of the listener. 2

Initializes a new instance of the class with the specified name and specified buffer size, using the specified file as the recipient of debugging and tracing output.

The path for the log file. The name of the listener. The size of the output buffer, in bytes. 2

Initializes a new instance of the class with the specified name and specified buffer size, using the specified file with the specified log retention policy as the recipient of the debugging and tracing output.

The path for the log file. The name of the listener. The size of the output buffer, in bytes. One of the values. 2

Initializes a new instance of the class with the specified name and specified buffer size, using the specified file with the specified log retention policy and maximum size as the recipient of the debugging and tracing output.

The path for the log file. The name of the listener. The size of the output buffer, in bytes. One of the values. The maximum file size, in bytes. is less than . is a negative number. 2

Initializes a new instance of the class with the specified name and specified buffer size, using the specified file with the specified log retention policy, maximum size, and file count as the recipient of the debugging and tracing output.

The path for the log file. The name of the listener. The size of the output buffer, in bytes. One of the values. The maximum file size, in bytes. The maximum number of output log files. is less than . is a negative number. is less than 1, and is . is less than 2, and is . 2

Gets the size of the output buffer.

The size of the output buffer, in bytes. 2

Closes the log file for this listener so that it no longer receives tracing or debugging output.

Writes error information, including a basic error message and a detailed error message, to the log file.

The basic error message to write. The detailed error message to append to the basic error message. 2

Causes buffered data to be written to the log for this listener.

Gets the custom XML configuration attributes that the trace listener supports.

A array that contains the XML configuration attributes recognized by this listener.

Gets a value indicating whether the trace listener is thread safe.

Always returns true. 2

Gets the maximum size of the log file.

The maximum file size, in bytes. 2

Gets the maximum number of log files.

The maximum number of log files, determined by the value of the property for the file. 2

Writes trace information, a single data object, and event information to the log file.

A that contains the current process ID, thread ID, and stack trace information. The source name. One of the values. A numeric identifier for the event. A data object to emit. 2

Writes trace information, multiple data objects, and event information to the log file.

A that contains the current process ID, thread ID, and stack trace information. The source name. One of the values. A numeric identifier for the event. An array of data objects to emit. 2

Writes trace information, a message, and event information to the log file.

A that contains the current process ID, thread ID, and stack trace information. The source name. One of the values. A numeric identifier for the event. The message to write. 2

Writes trace information, a formatted message, and event information to the log file.

A that contains the current process ID, thread ID, and stack trace information. The source name. One of the values. A numeric identifier for the event. A format string that contains zero or more format items that correspond to objects in the array. An object array that contains zero or more objects to format. 2

Gets the trace log retention option for the file.

One of the values. The default is . 2

Writes trace information, including the identity of a related activity, a message, and event information, to the log file.

A that contains the current process ID, thread ID, and stack trace information. The source name. A numeric identifier for the event. A trace message to write. A structure that identifies a related activity. 2

Writes a message to the log file without providing any additional context information.

The message to write. 2

Writes a message followed by the current line terminator to the log file without providing any additional context information.

The message to write. 2

Gets or sets the underlying text writer that writes to the log file.

A object. An attempt was made to assign a value to the property. 2

Specifies the file structure that will be used for the log.

One file with no maximum file size restriction.

One file with a maximum file size that is determined by the property.

An unlimited number of sequential files, each with a maximum file size that is determined by the property. There is no logical bound to the number or size of the files, but it is limited by the physical constraints imposed by the computer.

A finite number of sequential files, each with a maximum file size. When the property value is reached, writing starts in a new file with an incremented integer suffix.

A finite number of sequential files, each with a maximum file size. When the property value is reached, writing starts in a new file with an incremented integer suffix. When the property value is reached, the first file is cleared and overwritten. Files are then incrementally overwritten in a circular manner.

Provides unescaped XML data for the logging of user-provided trace data.

Initializes a new instance of the class by using the specified XML data string.

The XML data to be logged in the UserData node of the event schema. 2

Returns a string representation of the object.

A string representation of the object. If the object is null, this method returns an empty string. 2

Gets or sets the unescaped XML data string.

An unescaped XML string. 2

Contains the metadata that defines an event.

Initializes a new instance of the class.

The event identifier. Version of the event. The version indicates a revision to the event definition. You can use this member and the Id member to identify a unique event. Defines a potential target for the event. Specifies the level of detail included in the event. Operation being performed at the time the event is written. Identifies a logical component of the application that is writing the event. Bit mask that specifies the event category. The keyword can contain one or more provider-defined keywords, standard keywords, or both. 2

Retrieves the channel value from the event descriptor.

The channel that defines a potential target for the event. 2

Retrieves the event identifier value from the event descriptor.

The event identifier. 2

Retrieves the keyword value from the event descriptor.

The keyword, which is a bit mask, that specifies the event category. 2

Retrieves the level value from the event descriptor.

The level of detail included in the event. 2

Retrieves the operation code value from the event descriptor.

The operation being performed at the time the event is written. 2

Retrieves the task value from the event descriptor.

The task that identifies the logical component of the application that is writing the event. 2

Retrieves the version value from the event descriptor.

The version of the event. 2

Use this class to write events.

Initializes a new instance of the class.

Guid that uniquely identifies the provider. There is not enough memory to complete the operation. The classes in the namespace work only on Windows Vista. The parameter cannot be null. An error returned by the ETW subsystem. 2

Removes the provider's registration from the ETW subsystem and releases all unmanaged resources.

An error returned by the ETW subsystem. 2

Creates a unique activity identifier for the provider.

A unique Guid that you use when calling the method to set the activity identifier for the provider. 2 2

Gets the last error associated with an event write failure.

Use the value to determine the cause of an event write failure. 2

Determines whether any session enabled the provider, regardless of the level and keyword values used to enable the provider.

Is true if the provider is enabled to any session; otherwise, false. 2

Determines whether any session is requesting the specified event from the provider.

Is true if any session is requesting the specified event; otherwise, false. Level of detail included in the event. Bit mask that specifies the event category. This mask should be the same keyword mask that is defined in the manifest for the event. 2

Sets the current activity identifier used by the method.

A unique activity identifier that the method returns. 2

Writes an event. The event data is specified as a block of memory.

Is true if the event is written; otherwise, false. If false, call the method to determine the cause of the failure. An instance of that identifies the event to write. Size of the event data to which the parameter points. The maximum event data size is limited to 64 KB minus the size of the event headers. The event size is less if the session's buffer size is less and the session includes extended data items with the event. Pointer to the event data to write.

Writes an event. The event data is specified as an array of objects.

Is true if the event is written; otherwise, false. If false, call the method to determine the cause of the failure. An instance of that identifies the event to write. An array of objects that contain the event data to write. The object must be in the order specified in the manifest. The array is limited to 32 objects, of which only eight may be strings. The maximum data size for the event is limited to 64 KB minus the size of the event headers. The event size is less if the session's buffer size is less and the session includes extended data items with the event.This parameter can be null. The parameter contains too many objects or strings. 2

Writes an event. The event data is specified as a string.

Is true if the event is written; otherwise, false. If false, call the method to determine the cause of the failure. An instance of that identifies the event to write. The string to write as the event data. If is null. 2

Writes an event that contains a string as its data.

Is true if the event is written; otherwise, false. If false, call the method to determine the cause of the failure. String to write as the event data. If is null. 2

Writes an event that contains a string as its data if the level and keyword value match the events requested by the session.

Is true if the event is written; otherwise, false. If false, call the method to determine the cause of the failure. String to write as the event data. Level of detail included in the event. If the provider uses a manifest to define the event, set this value to the same level defined in the manifest. Bit mask that specifies the event category. If the provider uses a manifest to define the event, set this value to the same keyword mask defined in the manifest. If is null. 2

Links events together when tracing events in an end-to-end scenario. The event data is specified as a block of memory.

Is true if the event is written; otherwise, false. If false, call the method to determine the cause of the failure. An instance of that identifies the event to write. Activity identifier from the previous component. Use this parameter to link your component's events to the previous component's events. Size of the event data to which the parameter points. The maximum event data size is limited to 64 KB minus the size of the event headers. The event size is less if the session's buffer size is less and the session includes extended data items with the event. Pointer to the event data to write.

Links events together when tracing events in an end-to-end scenario. The event data is specified as an array of objects.

Is true if the event is written; otherwise, false. If false, call the method to determine the cause of the failure. An instance of that identifies the event to write. Activity identifier from the previous component. Use this parameter to link your component's events to the previous component's events. An array of objects that contain the event data to write. The data must be in the order specified in the manifest. The array is limited to 32 objects, of which only eight may be strings. The maximum data size for the event is limited to 64 KB minus the size of the event headers. The event size is less if the session's buffer size is less and the session includes extended data items with the event. If contains too many objects or strings. 2

Defines the possible states of the last write operation.

The write was successful.

The session ran out of free buffers to write to. This can occur during high event rates because the disk subsystem is overloaded or the number of buffers is too small. Rather than blocking until more buffers become available, the event is dropped. Consider increasing the number and size of the buffers for the session, or reducing the number of events written or the size of the events.

The event is larger than the session buffer size; events cannot span buffers.

A listener for that writes events to the ETW subsytem.

Initializes a new instance of the class using the specified provider identifier.

A unique string that identifies the provider. 2

Initializes a new instance of the class using the specified provider identifier and name of the listener.

A unique string that identifies the provider. Name of the listener. 2

Initializes a new instance of the class using the specified provider identifier, name of the listener, and delimiter.

A unique string that identifies the provider. Name of the listener. Delimiter used to delimit the event data. (For more details, see the property.) 2 2

Gets and sets the delimiter used to delimit the event data that is written to the ETW subsystem.

The delimiter used to delimit the event data. The default delimiter is a comma. 2 2 2 2 2 2 2 2 2 2 2 2

Represents a placeholder (bookmark) within an event stream. You can use the placeholder to mark a position and return to this position in a stream of events. An instance of this object can be obtained from an object, in which case it corresponds to the position of that event record.

Initializes a new instance of the class from the specified and instances.

A object that contains the information required to serialize the new object. A object that contains the source of the serialized stream that is associated with the new .

Populates a object with the data required to serialize the target object.

The SerializationInfo object to populate with data. The destination for this serialization.

Populates a object with the data needed to serialize the target object.

The SerializationInfo object to populate with data. The destination for this serialization.

Represents a keyword for an event. Keywords are defined in an event provider and are used to group the event with other similar events (based on the usage of the events).

Gets the localized name of the keyword.

Returns a string that contains a localized name for this keyword. 2

Gets the non-localized name of the keyword.

Returns a string that contains the non-localized name of this keyword. 2

Gets the numeric value associated with the keyword.

Returns a long value. 2

Contains an event level that is defined in an event provider. The level signifies the severity of the event.

Gets the localized name for the event level. The name describes what severity level of events this level is used for.

Returns a string that contains the localized name for the event level. 2

Gets the non-localized name of the event level.

Returns a string that contains the non-localized name of the event level. 2

Gets the numeric value of the event level.

Returns an integer value. 2

Contains static information and configuration settings for an event log. Many of the configurations settings were defined by the event provider that created the log.

Initializes a new object by specifying the local event log for which to get information and configuration settings.

The name of the local event log for which to get information and configuration settings. 2

Initializes a new object by specifying the name of the log for which to get information and configuration settings. The log can be on the local computer or a remote computer, based on the event log session specified.

The name of the event log for which to get information and configuration settings. The event log session used to determine the event log service that the specified log belongs to. The session is either connected to the event log service on the local computer or a remote computer. 2

Releases all the resources used by this object.

Releases the unmanaged resources used by this object, and optionally releases the managed resources.

true to release both managed and unmanaged resources; false to release only unmanaged resources.

Gets the flag that indicates if the event log is a classic event log. A classic event log is one that has its events defined in a .mc file instead of a manifest (.xml file) used by the event provider.

Returns true if the event log is a classic log, and returns false if the event log is not a classic log. 2

Gets or sets a Boolean value that determines whether the event log is enabled or disabled. An enabled log is one in which events can be logged, and a disabled log is one in which events cannot be logged.

Returns true if the log is enabled, and returns false if the log is disabled. 2

Gets or sets the file directory path to the location of the file where the events are stored for the log.

Returns a string that contains the path to the event log file. 2

Gets an value that specifies whether the event log is an application, system, or custom event log.

Returns an value. 2

Gets or sets an value that determines how events are handled when the event log becomes full.

Returns an value. 2

Gets the name of the event log.

Returns a string that contains the name of the event log. 2

Gets an value that determines the type of the event log.

Returns an value. 2

Gets or sets the maximum size, in bytes, that the event log file is allowed to be. When the file reaches this maximum size, it is considered full.

Returns a long value that represents the maximum size, in bytes, that the event log file is allowed to be. 2

Gets the name of the event provider that created this event log.

Returns a string that contains the name of the event provider that created this event log. 2

Gets the size of the buffer that the event provider uses for publishing events to the log.

Returns an integer value that can be null. 2

Gets the control globally unique identifier (GUID) for the event log if the log is a debug log. If this log is not a debug log, this value will be null.

Returns a GUID value or null. 2

Gets or sets keyword mask used by the event provider.

Returns a long value that can be null if the event provider did not define any keywords. 2

Gets the maximum latency time used by the event provider when publishing events to the log.

Returns an integer value that can be null if no latency time was specified by the event provider. 2

Gets or sets the maximum event level (which defines the severity of the event) that is allowed to be logged in the event log. This value is defined by the event provider.

Returns an integer value that can be null if the maximum event level was not defined in the event provider. 2

Gets the maximum number of buffers used by the event provider to publish events to the event log.

Returns an integer value that is the maximum number of buffers used by the event provider to publish events to the event log. This value can be null. 2

Gets the minimum number of buffers used by the event provider to publish events to the event log.

Returns an integer value that is the minimum number of buffers used by the event provider to publish events to the event log. This value can be null. 2

Gets an enumerable collection of the names of all the event providers that can publish events to this event log.

Returns an enumerable collection of strings that contain the event provider names. 2

Saves the configuration settings that

Gets or sets the security descriptor of the event log. The security descriptor defines the users and groups of users that can read and write to the event log.

Returns a string that contains the security descriptor for the event log. 2

Represents the base class for all the exceptions that are thrown when an error occurs while reading event log related information.

Initializes a new instance of the class.

Initializes a new instance of the class with the error code for the exception.

The error code for the error that occurred while reading or configuring event log related information. For more information and a list of event log related error codes, see http://go.microsoft.com/fwlink/?LinkId=82629.

Initializes a new instance of the class with serialized data.

The object that holds the serialized object data about the exception being thrown. The object that contains contextual information about the source or destination.

Initializes a new instance of the class by specifying the error message that describes the current exception.

The error message that describes the current exception. 2

Initializes a new instance of the class with an error message and inner exception.

The error message that describes the current exception. The Exception instance that caused the current exception. 2

Sets the SerializationInfo object with information about the exception.

The object that holds the serialized object data about the exception thrown. The object that contains contextual information about the source or destination. 2

Gets the error message that describes the current exception.

Returns a string that contains the error message that describes the current exception. 2

Allows you to access the run-time properties of active event logs and event log files. These properties include the number of events in the log, the size of the log, a value that determines whether the log is full, and the last time the log was written to or accessed.

Gets the file attributes of the log file associated with the log.

Returns an integer value. This value can be null. 2

Gets the time that the log file associated with the event log was created.

Returns a object. This value can be null. 2

Gets the size of the file, in bytes, associated with the event log.

Returns a long value. 2

Gets a Boolean value that determines whether the log file has reached its maximum size (the log is full).

Returns true if the log is full, and returns false if the log is not full. 2

Gets the last time the log file associated with the event log was accessed.

Returns a object. This value can be null. 2

Gets the last time data was written to the log file associated with the event log.

Returns a object. This value can be null. 2

Gets the number of the oldest event record in the event log.

Returns a long value that represents the number of the oldest event record in the event log. This value can be null. 2

Gets the number of event records in the event log.

Returns a long value that represents the number of event records in the event log. This value can be null. 2

Represents the exception thrown when an event provider publishes invalid data in an event.

Initializes a new instance of the class.

Initializes a new instance of the class with serialized data.

The object that holds the serialized object data about the exception thrown. The object that contains contextual information about the source or destination.

Initializes a new instance of the class by specifying the error message that describes the current exception.

The error message that describes the current exception. 2

Initializes a new instance of the class with an error message and inner exception.

The error message that describes the current exception. The Exception instance that caused the current exception. 2

Defines the default access permissions for the event log. The Application and System values indicate that the log shares the access control list (ACL) with the appropriate Windows log (the Application or System event logs) and share the Event Tracing for Windows (ETW) session with other logs of the same isolation. All channels with Custom isolation use a private ETW session.

The log shares the access control list with the Application event log and shares the ETW session with other logs that have Application isolation.

The log shares the access control list with the System event log and shares the ETW session with other logs that have System isolation.

The event log is a custom event log that uses its own private ETW session.

Represents a link between an event provider and an event log that the provider publishes events into. This object cannot be instantiated.

Gets the localized name of the event log.

Returns a string that contains the localized name of the event log. 2

Gets a Boolean value that determines whether the event log is imported, rather than defined in the event provider. An imported event log is defined in a different provider.

Returns true if the event log is imported by the event provider, and returns false if the event log is not imported by the event provider. 2

Gets the non-localized name of the event log associated with this object.

Returns a string that contains the non-localized name of the event log associated with this object. 2

Determines the behavior for the event log service handles an event log when the log reaches its maximum allowed size (when the event log is full).

New events continue to be stored when the log file is full. Each new incoming event replaces the oldest event in the log.

Archive the log when full, do not overwrite events. The log is automatically archived when necessary. No events are overwritten.

Do not overwrite events. Clear the log manually rather than automatically.

Represents the exception that is thrown when a requested event log (usually specified by the name of the event log or the path to the event log file) does not exist.

Initializes a new instance of the class.

Initializes a new instance of the class with serialized data.

The object that holds the serialized object data about the exception thrown. The object that contains contextual information about the source or destination.

Initializes a new instance of the class by specifying the error message that describes the current exception.

The error message that describes the current exception. 2

Initializes a new instance of the class with an error message and inner exception.

The error message that describes the current exception. The Exception instance that caused the current exception. 2

Contains an array of strings that represent XPath queries for elements in the XML representation of an event, which is based on the Event Schema. The queries in this object are used to extract values from the event.

Initializes a new class instance.

XPath queries used to extract values from the XML representation of the event. 2

Releases all the resources used by this object.

Releases the unmanaged resources used by this object, and optionally releases the managed resources.

true to release both managed and unmanaged resources; false to release only unmanaged resources.

Represents the exception that is thrown when a specified event provider name references a disabled event provider. A disabled event provider cannot publish events.

Initializes a new instance of the class.

Initializes a new instance of the class with serialized data.

The object that holds the serialized object data about the exception thrown. The object that contains contextual information about the source or destination.

Initializes a new instance of the class by specifying the error message that describes the current exception.

The error message that describes the current exception. 2

Initializes a new instance of the class with an error message and inner exception.

The error message that describes the current exception. The Exception instance that caused the current exception. 2

Represents a query for events in an event log and the settings that define how the query is executed and on what computer the query is executed on.

Initializes a new instance of the class by specifying the target of the query. The target can be an active event log or a log file.

The name of the event log to query, or the path to the event log file to query. Specifies whether the string used in the path parameter specifies the name of an event log, or the path to an event log file. 2

Initializes a new instance of the class by specifying the target of the query and the event query. The target can be an active event log or a log file.

Gets or sets the Boolean value that determines whether to read events from the newest event in an event log to the oldest event in the log.

Returns true if events are read from the newest event in the log to the oldest event, and returns false if events are read from the oldest event in the log to the newest event. 2

Gets or sets the session that access the Event Log service on the local computer or a remote computer. This object can be set to access a remote event log by creating a object or an object with this object.

Returns an object. 2

Gets or sets a Boolean value that determines whether this query will continue to retrieve events when the query has an error.

true indicates that the query will continue to retrieve events even if the query fails for some logs, and false indicates that this query will not continue to retrieve events when the query fails. 2

Enables you to read events from an event log based on an event query. The events that are read by this object are returned as objects.

Initializes a new instance of the class by specifying an event query.

The event query used to retrieve events. 2

Initializes a new instance of the class by specifying an event query and a bookmark that is used as starting position for the query.

The event query used to retrieve events. The bookmark (placeholder) used as a starting position in the event log or stream of events. Only events logged after the bookmark event will be returned by the query. 2

Initializes a new instance of the class by specifying an active event log to retrieve events from.

The name of the event log to retrieve events from. 2

Initializes a new instance of the class by specifying the name of an event log to retrieve events from or the path to a log file to retrieve events from.

The name of the event log to retrieve events from, or the path to the event log file to retrieve events from. Specifies whether the string used in the path parameter specifies the name of an event log, or the path to an event log file. 2

Gets or sets the number of events retrieved from the stream of events on every read operation.

Returns an integer value. 2

Cancels the current query operation.

Releases all the resources used by this object.

Releases the unmanaged resources used by this object, and optionally releases the managed resources.

true to release both managed and unmanaged resources; false to release only unmanaged resources.

Gets the status of each event log or log file associated with the event query in this object.

Returns a list of objects that each contain status information about an event log associated with the event query in this object. 2

Reads the next event that is returned from the event query in this object.

Returns an object. 2

Reads the next event that is returned from the event query in this object.

Returns an object. The maximum time to allow the read operation to run before canceling the operation. 2

Changes the position in the event stream where the next event that is read will come from by specifying a bookmark event. No events logged before the bookmark event will be retrieved.

The bookmark (placeholder) used as a starting position in the event log or stream of events. Only events that have been logged after the bookmark event will be returned by the query. 2

Changes the position in the event stream where the next event that is read will come from by specifying a bookmark event and an offset number of events from the bookmark. No events logged before the bookmark plus the offset will be retrieved.

The bookmark (placeholder) used as a starting position in the event log or stream of events. Only events that have been logged after the bookmark event will be returned by the query. The offset number of events to change the position of the bookmark. 2

Changes the position in the event stream where the next event that is read will come from by specifying a starting position and an offset from the starting position. No events logged before the starting position plus the offset will be retrieved.

A value from the enumeration defines where in the stream of events to start querying for events. The offset number of events to add to the origin. 2

Represents an exception that is thrown when an error occurred while reading, querying, or subscribing to the events in an event log.

Initializes a new instance of the class.

Initializes a new instance of the class with serialized data.

The object that holds the serialized object data about the exception thrown. The object that contains contextual information about the source or destination.

Initializes a new instance of the class by specifying the error message that describes the current exception.

The error message that describes the current exception. 2

Initializes a new instance of the class with an error message and inner exception.

The error message that describes the current exception. The Exception instance that caused the current exception. 2

Contains the properties of an event instance for an event that is received from an object. The event properties provide information about the event such as the name of the computer where the event was logged and the time that the event was created.

Gets the globally unique identifier (GUID) for the activity in process for which the event is involved. This allows consumers to group related activities.

Returns a GUID value. 2

Gets a placeholder (bookmark) that corresponds to this event. This can be used as a placeholder in a stream of events.

Returns a object. 2

Gets the name of the event log or the event log file in which the event is stored.

Returns a string that contains the name of the event log or the event log file in which the event is stored. 2

Releases the unmanaged resources used by this object, and optionally releases the managed resources.

true to release both managed and unmanaged resources; false to release only unmanaged resources.

Gets the event message in the current locale.

Returns a string that contains the event message in the current locale. 2

Gets the event message, replacing variables in the message with the specified values.

Returns a string that contains the event message in the current locale. The values used to replace variables in the event message. Variables are represented by %n, where n is a number. 2

Gets the enumeration of the values of the user-supplied event properties, or the results of XPath-based data if the event has XML representation.

Returns a list of objects. Selects the property values to return. 2

Gets the identifier for this event. All events with this identifier value represent the same type of event.

Returns an integer value. This value can be null. 2

Gets the keyword mask of the event. Get the value of the property to get the name of the keywords used in this mask.

Returns a long value. This value can be null. 2

Gets the display names of the keywords used in the keyword mask for this event.

Returns an enumerable collection of strings that contain the display names of the keywords used in the keyword mask for this event. 2

Gets the level of the event. The level signifies the severity of the event. For the name of the level, get the value of the property.

Returns a byte value. This value can be null. 2

Gets the display name of the level for this event.

Returns a string that contains the display name of the level for this event. 2

Gets the name of the event log where this event is logged.

Returns a string that contains a name of the event log that contains this event. 2

Gets the name of the computer on which this event was logged.

Returns a string that contains the name of the computer on which this event was logged. 2

Gets a list of query identifiers that this event matches. This event matches a query if the query would return this event.

Returns an enumerable collection of integer values. 2

Gets the opcode of the event. The opcode defines a numeric value that identifies the activity or a point within an activity that the application was performing when it raised the event. For the name of the opcode, get the value of the property.

Returns a short value. This value can be null. 2

Gets the display name of the opcode for this event.

Returns a string that contains the display name of the opcode for this event. 2

Gets the process identifier for the event provider that logged this event.

Returns an integer value. This value can be null. 2

Gets the user-supplied properties of the event.

Returns a list of objects. 2

Gets the globally unique identifier (GUID) of the event provider that published this event.

Returns a GUID value. This value can be null. 2

Gets the name of the event provider that published this event.

Returns a string that contains the name of the event provider that published this event. 2

Gets qualifier numbers that are used for event identification.

Returns an integer value. This value can be null. 2

Gets the event record identifier of the event in the log.

Returns a long value. This value can be null. 2

Gets a globally unique identifier (GUID) for a related activity in a process for which an event is involved.

Returns a GUID value. This value can be null. 2

Gets a task identifier for a portion of an application or a component that publishes an event. A task is a 16-bit value with 16 top values reserved. This type allows any value between 0x0000 and 0xffef to be used. For the name of the task, get the value of the property.

Returns an integer value. This value can be null. 2

Gets the display name of the task for the event.

Returns a string that contains the display name of the task for the event. 2

Gets the thread identifier for the thread that the event provider is running in.

Returns an integer value. This value can be null. 2

Gets the time, in format, that the event was created.

Returns a value. The value can be null. 2

Gets the XML representation of the event. All of the event properties are represented in the event's XML. The XML conforms to the event schema.

Returns a string that contains the XML representation of the event. 2

Gets the security descriptor of the user whose context is used to publish the event.

Returns a value. 2

Gets the version number for the event.

Returns a byte value. This value can be null. 2

Used to access the Event Log service on the local computer or a remote computer so you can manage and gather information about the event logs and event providers on the computer.

Initializes a new object, establishes a connection with the local Event Log service.

Initializes a new object, and establishes a connection with the Event Log service on the specified computer. The credentials (user name and password) of the user who calls the method is used for the credentials to access the remote computer.

The name of the computer on which to connect to the Event Log service. 2

Initializes a new object, and establishes a connection with the Event Log service on the specified computer. The specified credentials (user name and password) are used for the credentials to access the remote computer.

The name of the computer on which to connect to the Event Log service. The domain of the specified user. The user name used to connect to the remote computer. The password used to connect to the remote computer. The type of connection to use for the connection to the remote computer. 2

Cancels any operations (such as reading an event log or subscribing to an event log) that are currently active for the Event Log service that this session object is connected to.

Clears events from the specified event log.

The name of the event log to clear all the events from. 2

Clears events from the specified event log, and saves the cleared events to the specified file.

The name of the event log to clear all the events from. The path to the file in which the cleared events will be saved. The file should end in .evtx. 2

Releases all the resources used by this object.

Releases the unmanaged resources used by this object, and optionally releases the managed resources.

true to release both managed and unmanaged resources; false to release only unmanaged resources.

Exports events into an external log file. The events are stored without the event messages.

Exports events into an external log file. A flag can be set to indicate that the method will continue exporting events even if the specified query fails for some logs. The events are stored without the event messages.

The name of the event log to export events from, or the path to the event log file to export events from. Specifies whether the string used in the path parameter specifies the name of an event log, or the path to an event log file. The query used to select the events to export. Only the events returned from the query will be exported. The path to the log file (ends in .evtx) in which the exported events will be stored after this method is executed. true indicates that the method will continue exporting events even if the specified query fails for some logs, and false indicates that this method will not continue to export events when the specified query fails. 2

Exports events and their messages into an external log file.

Exports events and their messages into an external log file. A flag can be set to indicate that the method will continue exporting events even if the specified query fails for some logs. The event messages are exported in the specified language.

Gets an object that contains runtime information for the specified event log.

Returns an object that contains information about the specified log. The name of the event log to get information about, or the path to the event log file to get information about. Specifies whether the string used in the path parameter specifies the name of an event log, or the path to an event log file. 2

Gets an enumerable collection of all the event log names that are registered with the Event Log service.

Returns an enumerable collection of strings that contain the event log names. 2

Gets an enumerable collection of all the event provider names that are registered with the Event Log service. An event provider is an application that publishes events to an event log.

Returns an enumerable collection of strings that contain the event provider names. 2

Gets a static predefined session object that is connected to the Event Log service on the local computer.

Returns an object that is a predefined session object that is connected to the Event Log service on the local computer. 2

Contains the status code or error code for a specific event log. This status can be used to determine if the event log is available for an operation.

Gets the name of the event log for which the status code is obtained.

Returns a string that contains the name of the event log for which the status code is obtained. 2

Gets the status code or error code for the event log. This status or error is the result of a read or subscription operation on the event log.

Returns an integer value. 2

Defines the type of events that are logged in an event log. Each log can only contain one type of event.

These events are primarily for end users, administrators, and support. The events that are found in the Administrative type logs indicate a problem and a well-defined solution that an administrator can act on. An example of an administrative event is an event that occurs when an application fails to connect to a printer.

Events in an operational type event log are used for analyzing and diagnosing a problem or occurrence. They can be used to trigger tools or tasks based on the problem or occurrence. An example of an operational event is an event that occurs when a printer is added or removed from a system.

Events in an analytic event log are published in high volume. They describe program operation and indicate problems that cannot be handled by user intervention.

Events in a debug type event log are used solely by developers to diagnose a problem for debugging.

Allows you to subscribe to incoming events. Each time a desired event is published to an event log, the event is raised, and the method that handles this event will be executed.

Initializes a new instance of the class by specifying an event query.

Specifies a query for the event subscription. When an event is logged that matches the criteria expressed in the query, then the event is raised. 2

Initializes a new instance of the class by specifying an event query and a bookmark that is used as starting position for the query.

Initializes a new instance of the class by specifying an event query, a bookmark that is used as starting position for the query, and a Boolean value that determines whether to read the events that already exist in the event log.

Specifies a query for the event subscription. When an event is logged that matches the criteria expressed in the query, then the event is raised. The bookmark (placeholder) used as a starting position in the event log or stream of events. Only events that have been logged after the bookmark event will be returned by the query. A Boolean value that determines whether to read the events that already exist in the event log. If this value is true, then the existing events are read and if this value is false, then the existing events are not read. 2

Initializes a new instance of the class by specifying the name or path to an event log.

The path or name of the event log monitor for events. If any event is logged in this event log, then the event is raised. 2

Releases all the resources used by this object.

Releases the unmanaged resources used by this object, and optionally releases the managed resources.

true to release both managed and unmanaged resources; false to release only unmanaged resources.

Determines whether this object starts delivering events to the event delegate.

Returns true when this object can deliver events to the event delegate, and returns false when this object has stopped delivery. 2

Allows setting a delegate (event handler method) that gets called every time an event is published that matches the criteria specified in the event query for this object.

Contains the metadata (properties and settings) for an event that is defined in an event provider.

Gets the description template associated with the event using the current thread locale for the description language.

Returns a string that contains the description template associated with the event. 2

Gets the identifier of the event that is defined in the event provider.

Returns a long value that is the event identifier. 2

Gets the keywords associated with the event that is defined in the even provider.

Returns an enumerable collection of objects. 2

Gets the level associated with the event that is defined in the event provider. The level defines the severity of the event.

Returns an object. 2

Gets a link to the event log that receives this event when the provider publishes this event.

Returns a object. 2

Gets the opcode associated with this event that is defined by an event provider. The opcode defines a numeric value that identifies the activity or a point within an activity that the application was performing when it raised the event.

Returns a object. 2

Gets the task associated with the event. A task identifies a portion of an application or a component that publishes an event.

Returns a object. 2

Gets the template string for the event. Templates are used to describe data that is used by a provider when an event is published. Templates optionally specify XML that provides the structure of an event. The XML allows values that the event publisher provides to be inserted during the rendering of an event.

Returns a string that contains the template for the event. 2

Gets the version of the event that qualifies the event identifier.

Returns a byte value. 2

Contains an event opcode that is defined in an event provider. An opcode defines a numeric value that identifies the activity or a point within an activity that the application was performing when it raised the event.

Gets the localized name for an event opcode.

Returns a string that contains the localized name for an event opcode. 2

Gets the non-localized name for an event opcode.

Returns a string that contains the non-localized name for an event opcode. 2

Gets the numeric value associated with the event opcode.

Returns an integer value. 2

Contains the value of an event property that is specified by the event provider when the event is published.

Gets the value of the event property that is specified by the event provider when the event is published.

Returns an object. 2

Defines the properties of an event instance for an event that is received from an object. The event properties provide information about the event such as the name of the computer where the event was logged and the time the event was created. This class is an abstract class. The class implements this class.

Initializes a new instance of the class.

Gets the globally unique identifier (GUID) for the activity in process for which the event is involved. This allows consumers to group related activities.

Returns a GUID value. 2

Gets a placeholder (bookmark) that corresponds to this event. This can be used as a placeholder in a stream of events.

Returns a object. 2

Releases all the resources used by this object.

Releases the unmanaged resources used by this object, and optionally releases the managed resources.

true to release both managed and unmanaged resources; false to release only unmanaged resources.

Gets the event message in the current locale.

Returns a string that contains the event message in the current locale. 2

Gets the event message, replacing variables in the message with the specified values.

Returns a string that contains the event message in the current locale. The values used to replace variables in the event message. Variables are represented by %n, where n is a number. 2

Gets the identifier for this event. All events with this identifier value represent the same type of event.

Returns an integer value. This value can be null. 2

Gets the keyword mask of the event. Get the value of the property to get the name of the keywords used in this mask.

Returns a long value. This value can be null. 2

Gets the display names of the keywords used in the keyword mask for this event.

Returns an enumerable collection of strings that contain the display names of the keywords used in the keyword mask for this event. 2

Gets the level of the event. The level signifies the severity of the event. For the name of the level, get the value of the property.

Returns a byte value. This value can be null. 2

Gets the display name of the level for this event.

Returns a string that contains the display name of the level for this event. 2

Gets the name of the event log where this event is logged.

Returns a string that contains a name of the event log that contains this event. 2

Gets the name of the computer on which this event was logged.

Returns a string that contains the name of the computer on which this event was logged. 2

Returns a short value. This value can be null. 2

Gets the display name of the opcode for this event.

Returns a string that contains the display name of the opcode for this event. 2

Gets the process identifier for the event provider that logged this event.

Returns an integer value. This value can be null. 2

Gets the user-supplied properties of the event.

Returns a list of objects. 2

Gets the globally unique identifier (GUID) of the event provider that published this event.

Returns a GUID value. This value can be null. 2

Gets the name of the event provider that published this event.

Returns a string that contains the name of the event provider that published this event. 2

Gets qualifier numbers that are used for event identification.

Returns an integer value. This value can be null. 2

Gets the event record identifier of the event in the log.

Returns a long value. This value can be null. 2

Gets a globally unique identifier (GUID) for a related activity in a process for which an event is involved.

Returns a GUID value. This value can be null. 2

Gets a task identifier for a portion of an application or a component that publishes an event. A task is a 16-bit value with 16 top values reserved. This type allows any value between 0x0000 and 0xffef to be used. To obtain the task name, get the value of the property.

Returns an integer value. This value can be null. 2

Gets the display name of the task for the event.

Returns a string that contains the display name of the task for the event. 2

Gets the thread identifier for the thread that the event provider is running in.

Returns an integer value. This value can be null. 2

Gets the time, in format, that the event was created.

Returns a value. The value can be null. 2

Gets the XML representation of the event. All of the event properties are represented in the event XML. The XML conforms to the event schema.

Returns a string that contains the XML representation of the event. 2

Gets the security descriptor of the user whose context is used to publish the event.

Returns a value. 2

Gets the version number for the event.

Returns a byte value. This value can be null. 2

When the event is raised, an instance of this object is passed to the delegate method that handles the event. This object contains the event that was published to the event log or the exception that occurred when the event subscription failed.

Gets the exception that occurred when the event subscription failed. The exception has a description of why the subscription failed.

Returns an object. 2

Gets the event record that is published to the event log. This event matches the criteria from the query specified in the event subscription.

Returns a object. 2

Contains an event task that is defined in an event provider. The task identifies a portion of an application or a component that publishes an event. A task is a 16-bit value with 16 top values reserved.

Gets the localized name for the event task.

Returns a string that contains the localized name for the event task. 2

Gets the event globally unique identifier (GUID) associated with the task.

Returns a GUID value. 2

Gets the non-localized name of the event task.

Returns a string that contains the non-localized name of the event task. 2

Gets the numeric value associated with the task.

Returns an integer value. 2

Specifies that a string contains a name of an event log or the file system path to an event log file.

A path parameter contains the name of the event log.

A path parameter contains the file system path to an event log file.

Contains static information about an event provider, such as the name and id of the provider, and the collection of events defined in the provider.

Initializes a new instance of the class by specifying the name of the provider that you want to retrieve information about.

The name of the event provider that you want to retrieve information about. 2

Initializes a new instance of the class by specifying the name of the provider that you want to retrieve information about, the event log service that the provider is registered with, and the language that you want to return the information in.

The name of the event provider that you want to retrieve information about. The object that specifies whether to get the provider information from a provider on the local computer or a provider on a remote computer. The culture that specifies the language that the information should be returned in. 2

Gets the localized name of the event provider.

Returns a string that contains the localized name of the event provider. 2

Releases all the resources used by this object.

Releases the unmanaged resources used by this object, and optionally releases the managed resources.

true to release both managed and unmanaged resources; false to release only unmanaged resources.

Gets an enumerable collection of objects, each of which represents an event that is defined in the provider.

Returns an enumerable collection of objects. 2

Gets the base of the URL used to form help requests for the events in this event provider.

Returns a value. 2

Gets the globally unique identifier (GUID) for the event provider.

Returns the GUID value for the event provider. 2

Gets an enumerable collection of objects, each of which represent an event keyword that is defined in the event provider.

Returns an enumerable collection of objects. 2

Gets an enumerable collection of objects, each of which represent a level that is defined in the event provider.

Returns an enumerable collection of objects. 2

Gets an enumerable collection of objects, each of which represent a link to an event log that is used by the event provider.

Returns an enumerable collection of objects. 2

Gets the path of the file that contains the message table resource that has the strings associated with the provider metadata.

Returns a string that contains the path of the provider message file. 2

Gets the unique name of the event provider.

Returns a string that contains the unique name of the event provider. 2

Gets an enumerable collection of objects, each of which represent an opcode that is defined in the event provider.

Returns an enumerable collection of objects. 2

Gets the path of the file that contains the message table resource that has the strings used for parameter substitutions in event descriptions.

Returns a string that contains the path of the file that contains the message table resource that has the strings used for parameter substitutions in event descriptions. 2

Gets the path to the file that contains the metadata associated with the provider.

Returns a string that contains the path to the file that contains the metadata associated with the provider. 2

Gets an enumerable collection of objects, each of which represent a task that is defined in the event provider.

Returns an enumerable collection of objects. 2

Defines values for the type of authentication used during a Remote Procedure Call (RPC) login to a server. This login occurs when you create a object that specifies a connection to a remote computer.

Use the default authentication method during RPC login. The default authentication is equivalent to Negotiate.

Use the Negotiate authentication method during RPC login. This allows the client application to select the most appropriate authentication method (NTLM or Kerberos) for the situation.

Use Kerberos authentication during RPC login.

Use Windows NT LAN Manager (NTLM) authentication during RPC login.

Defines the standard keywords that are attached to events by the event provider. For more information about keywords, see .

This value indicates that no filtering on keyword is performed when the event is published.

Attached to all Windows Diagnostic Infrastructure (WDI) context events.

Attached to all Windows Diagnostic Infrastructure (WDI) diagnostic events.

Attached to all Service Quality Mechanism (SQM) events.

Attached to all failed security audit events. This keyword should only be used for events in the Security log.

Attached to all successful security audit events. This keyword should only be used for events in the Security log.

Attached to transfer events where the related Activity ID (Correlation ID) is a computed value and is not guaranteed to be unique (not a real GUID).

Attached to events which are raised using the RaiseEvent function.

Defines the standard event levels that are used in the Event Log service. The level defines the severity of the event. Custom event levels can be defined beyond these standard levels. For more information about levels, see .

This value indicates that not filtering on the level is done during the event publishing.

This level corresponds to critical errors, which is a serious error that has caused a major failure.

This level corresponds to normal errors that signify a problem.

This level corresponds to warning events. For example, an event that gets published because a disk is nearing full capacity is a warning event.

This level corresponds to informational events or messages that are not errors. These events can help trace the progress or state of an application.

This level corresponds to lengthy events or messages.

Defines the standard opcodes that are attached to events by the event provider. For more information about opcodes, see .

An event with this opcode is an informational event.

An event with this opcode is published when an application starts a new transaction or activity. This can be embedded into another transaction or activity when multiple events with the Start opcode follow each other without an event with a Stop opcode.

An event with this opcode is published when an activity or a transaction in an application ends. The event corresponds to the last unpaired event with a Start opcode.

An event with this opcode is a trace collection start event.

An event with this opcode is a trace collection stop event.

An event with this opcode is an extension event.

An event with this opcode is published after an activity in an application replies to an event.

An event with this opcode is published after an activity in an application resumes from a suspended state. The event should follow an event with the Suspend opcode.

An event with this opcode is published when an activity in an application is suspended.

An event with this opcode is published when one activity in an application transfers data or system resources to another activity.

An event with this opcode is published when one activity in an application receives data.

Defines the standard tasks that are attached to events by the event provider. For more information about tasks, see .

No task is used to identify a portion of an application that publishes an event.

Contains the raw data for a counter.

Sets or retrieves the raw counter data.

The raw counter data. 2

Defines a set of logical counters.

Initializes a new instance of the class.

Guid that uniquely identifies the provider of the counter data. Use the Guid specified in the manifest. Guid that uniquely identifies the counter set for a provider. Use the Guid specified in the manifest. Identifies the type of the counter set, for example, whether the counter set is a single or multiple instance counter set. Not enough memory is available to complete the operation. Not supported prior to Windows Vista. One of the parameters is NULL or not valid. An underlying Win32 function call failed. 2

Adds a counter to the counter set by using the specified counter identifier and type.

Identifies the counter. Use the same value that you used in the manifest to define the counter. Identifies the counter type. The counter type determines how the counter data is calculated, averaged, and displayed. The counter identifier already exists in the set or is negative, or the counter type is NULL or not valid. You cannot add counters to the counter set after creating an instance of the counter set. 2

Adds a counter to the counter set by using the specified counter identifier and type and a display name for the counter.

Identifies the counter. Use the same value that you used in the manifest to define the counter. Identifies the counter type. The counter type determines how the counter data is calculated, averaged, and displayed. Name of the counter. You can use this name to index the counter in the counter set instance. (See .) The counter identifier already exists in the set or is negative, or the counter type is NULL or not valid. You cannot add counters to the counter set after creating an instance of the counter set. 2

Creates an instance of the counter set.

An instance of the counter set which will contain the counter data. Name of the instance. The name must be unique. The instance name is NULL. You must add counters to the counter set before creating an instance of the counter set. 2 2

Creates an instance of the logical counters defined in the class.

Retrieves the collection of counter data for the counter set instance.

A collection of the counter data contained in the counter set instance. 2 2

Contains the collection of counter values.

2 2

Accesses a counter value in the collection by using the specified counter identifier.

The counter data. Identifier of the counter. This is the identifier you used when you added the counter to the counter set.

Accesses a counter value in the collection by using the specified counter name.

The counter data. Name of the counter. This is the name that you used when you added the counter to the counter set.

Specifies whether the counter set allows multiple instances such as processes and physical disks, or a single instance such as memory.

The counter set contains single instance counters, for example, a counter that measures physical memory.

The counter set contains multiple instance counters, for example, a counter that measures the average disk I/O for a process.

The counter set contains single instance counters whose aggregate value is obtained from one or more sources. For example, a counter in this type of counter set might obtain the number of reads from each of the three hard disks on the computer and sum their values.

This type is similar to except that this counter set type stores all counter values for the lifetime of the consumer application (the counter value is cached beyond the lifetime of the counter). For example, if one of the hard disks in the global aggregate example were to become unavailable, the total bytes read by that disk would still be available and used to calculate the aggregate value.

The counter set contains multiple instance counters whose aggregate value is obtained from all instances of the counter. For example, a counter in this type of counter set might obtain the total thread execution time for all threads in a multithreaded application and sum their values.

This type is similar to , except that instead of aggregating all instance data to one aggregated (_Total) instance, it will aggregate counter data from instances of the same name. For example, if multiple provider processes contained instances named IExplore, and CounterSet will show multiple IExplore instances (IExplore, IExplore#1, IExplore#2, and so on); however, a instance type will publish only one IExplore instance with aggregated counter data from all instances named IExplore.

Defines the possible types of counters. Each counter is assigned a counter type. The counter type determines how the counter data is calculated, averaged, and displayed.

This counter type is designed to monitor the average length of a queue to a resource over time. It shows the difference between the queue lengths observed during the last two sample intervals divided by the duration of the interval. (See the PERF_COUNTER_QUEUELEN_TYPE counter type in the deployment kit.)

This counter type monitors the average length of a queue to a resource over time. Counters of this type display the difference between the queue lengths observed during the last two sample intervals, divided by the duration of the interval. This counter type is the same as the counter type, except that it uses larger fields to accommodate larger values. (See the PERF_COUNTER_LARGE_QUEUELEN_TYPE counter type in the deployment kit.)

This counter type measures the queue-length space-time product using a 100-nanosecond time base. (See the PERF_COUNTER_100NS_QUEUELEN_TYPE counter type in the deployment kit.)

This counter type measures the queue-length space-time product using an object-specific time base. (See the PERF_COUNTER_OBJ_QUEUELEN_TYPE counter type in the deployment kit.)

This counter type shows the last observed value only. It does not display an average. (See the PERF_COUNTER_RAWCOUNT counter type in the deployment kit.)

This counter type shows the last observed value only, not an average. It is the same as the counter type, except that it uses larger fields to accommodate larger values. (See the PERF_COUNTER_LARGE_RAWCOUNT counter type in the deployment kit.)

This counter type shows the most recently observed value, in hexadecimal format. It does not display an average. (See the PERF_COUNTER_RAWCOUNT_HEX counter type in the deployment kit.)

This counter type shows the last observed value, in hexadecimal format. It is the same as the counter type, except that it uses larger fields to accommodate larger values. (See the PERF_COUNTER_LARGE_RAWCOUNT_HEX counter type in the deployment kit.)

This counter type shows the average number of operations completed during each second of the sample interval. Counters of this type measure time in ticks of the system clock. (See the PERF_COUNTER_COUNTER counter type in the deployment kit.)

This counter type shows the average number of operations completed during each second of the sample interval. Counters of this type measure time in ticks of the system clock. This counter type is the same as the type, but it uses larger fields to accommodate larger values. (See the PERF_COUNTER_BULK_COUNT counter type in the deployment kit.)

This counter type shows the ratio of a subset to its set as a percentage. For example, it compares the number of bytes in use on a disk to the total number of bytes on the disk. Counters of this type display the current percentage only, not an average over time. (See the PERF_RAW_FRACTION counter type in the deployment kit.)

This counter type shows the ratio of a subset to its set as a percentage. For example, it compares the number of bytes in use on a disk to the total number of bytes on the disk. Counters of this type display the current percentage only, not an average over time. It is the same as the counter type, except that it uses larger fields to accommodate larger values.

This counter type collects the last observed value only. The value is used as the denominator of a counter that presents a general arithmetic fraction. This type supports the counter type. (See the PERF_RAW_BASE counter type in the deployment kit.)

This counter type collects the last observed value. It is the same as the counter type except that it uses larger fields to accommodate larger values. This type supports the counter type. (See the PERF_LARGE_RAW_BASE counter type in the deployment kit.)

This counter type shows the average ratio of hits to all operations during the last two sample intervals. (See the PERF_SAMPLE_FRACTION counter type in the deployment kit.)

This counter type shows the average number of operations completed in one second. It measures time in units of ticks of the system performance timer. The variable F represents the number of ticks that occur in one second. The value of F is factored into the equation so that the result is displayed in seconds. (See the PERF_SAMPLE_COUNTER counter type in the deployment kit.)

This counter stores the number of sampling interrupts taken and is used as a denominator in the sampling fraction. This type supports the counter type.

This counter type measures the average time it takes to complete a process or operation. Counters of this type display a ratio of the total elapsed time of the sample interval to the number of processes or operations completed during that time. This counter type measures time in ticks of the system clock. (See the PERF_AVERAGE_TIMER counter type in the deployment kit.)

This counter is used as the base data (denominator) in the computation of time or count averages for the and counter types. This counter type collects the last observed value only. (See the PERF_AVERAGE_BASE counter type in the deployment kit.)

This counter type shows how many items are processed, on average, during an operation. Counters of this type display a ratio of the items processed (such as bytes sent) to the number of operations completed. The ratio is calculated by comparing the number of items processed during the last interval to the number of operations completed during the last interval. (See the PERF_AVERAGE_BULK counter type in the deployment kit.)

This counter type shows the average time that a component was active as a percentage of the total sample time. (See the PERF_COUNTER_TIMER counter type in the deployment kit.)

This is an inverse counter type. Inverse counters measure the time that a component is not active and derive the active time from that measurement. Counters of this type display the average percentage of active time observed during sample interval. The value of these counters is calculated by monitoring the percentage of time that the service was inactive and then subtracting that value from 100 percent. This counter type is the same as the counter type, except that it measures time in units of ticks of the system performance timer, rather than in 100 nanosecond units. (See the PERF_COUNTER_TIMER_INV counter type in the deployment kit.)

This counter type shows the active time of a component as a percentage of the total elapsed time of the sample interval. It measures time in units of 100 nanoseconds. Counters of this type are designed to measure the activity of one component at a time. (See the PERF_100NSEC_TIMER counter type in the deployment kit.)

This counter type shows the average percentage of active time observed during the sample interval. This is an inverse counter. Inverse counters are calculated by monitoring the percentage of time that the service was inactive and then subtracting that value from 100 percent. (See the PERF_100NSEC_TIMER_INV counter type in the deployment kit.)

This counter type shows the total time between when the component or process started and the time when this value is calculated. (See the PERF_ELAPSED_TIME counter type in the deployment kit.)

This counter type is a multitimer. Multitimers collect data from more than one instance of a component, such as a processor or disk. Counters of this type display the active time of one or more components as a percentage of the total time of the sample interval. Because the numerator records the active time of components operating simultaneously, the resulting percentage can exceed 100 percent. This counter type differs from in that it measures time in units of ticks of the system performance timer, rather than in 100 nanosecond units. (See the PERF_COUNTER_MULTI_TIMER counter type in the deployment kit.)

This counter type shows the active time of one or more components as a percentage of the total time of the sample interval. This counter type is an inverse multitimer. Multitimers monitor more than one instance of a component, such as a processor or disk. Inverse counters measure the time that a component is not active and derive the active time from that measurement. This counter differs from in that it measures time in units of ticks of the system performance timer, rather than in 100 nanosecond units. (See the PERF_COUNTER_MULTI_TIMER_INV counter type in the deployment kit.)

This counter type shows the active time of one or more components as a percentage of the total time of the sample interval. It measures time in 100 nanosecond units. This counter type is a multitimer. Multitimers are designed to monitor more than one instance of a component, such as a processor or disk. (See the PERF_100NSEC_MULTI_TIMER counter type in the deployment kit.)

This counter type shows the active time of one or more components as a percentage of the total time of the sample interval. Counters of this type measure time in 100 nanosecond units. This counter type is an inverse multitimer. Multitimers are designed to monitor more than one instance of a component, such as a processor or disk. Inverse counters measure the time that a component is not active and derive its active time from the measurement of inactive time. (See the PERF_100NSEC_MULTI_TIMER_INV counter type in the deployment kit.)

Indicates the number of items sampled. It is used as the denominator in the calculations to get an average among the items sampled when taking timings of multiple, but similar, items. This type supports the following counter types: , , , and .

This counter type shows the change in the measured attribute between the two most recent sample intervals. (See the PERF_COUNTER_DELTA counter type in the deployment kit.)

This counter type shows the change in the measured attribute between the two most recent sample intervals. It is the same as the counter type, except that it uses larger fields to accommodate larger values. (See the PERF_COUNTER_LARGE_DELTA counter type in the deployment kit.)

This 64-bit counter type is a timer that displays in object-specific units. (See the PERF_OBJ_TIME_TIMER counter type in the deployment kit.)

This counter type shows a value that consists of two counter values: the count of the elapsed time of the event being monitored, and the frequency from the system performance timer. This counter type differs from other counter timers in that the clock tick value accompanies the counter value, eliminating any possible difference due to latency from the function call. Precision counter types are used when standard system timers are not precise enough for accurate readings. (See the PERF_PRECISION_TIMER counter type in the deployment kit.)

This counter type shows a value that consists of two counter values: the count of the elapsed time of the event being monitored, and the "clock" time from a private timer in the same units. It measures time in 100 nanosecond units. This counter type differs from other counter timers in that the clock tick value accompanies the counter value eliminating any possible difference due to latency from the function call. Precision counter types are used when standard system timers are not precise enough for accurate readings. (See the PERF_PRECISION_100NS_TIMER counter type in the deployment kit.)

This counter type shows a value that consists of two counter values: the count of the elapsed time of the event being monitored, and the frequency specified in the PerfFreq field of the object header. This counter type differs from other counter timers in that the clock tick value accompanies the counter value so as to eliminate any possible difference due to latency from the function call. Precision counter types are used when standard system timers are not precise enough for accurate readings. (See the PERF_PRECISION_OBJECT_TIMER counter type in the deployment kit.)

Specifies whether the underlying handle is inheritable by child processes.

Specifies that the handle is not inheritable by child processes.

Specifies that the handle is inheritable by child processes.

Exposes the client side of an anonymous pipe stream, which supports both synchronous and asynchronous read and write operations.

Initializes a new instance of the class from the specified handle.

One of the enumeration values that determines the direction of the pipe.Anonymous pipes can only be in one direction, so cannot be set to . A safe handle for the pipe that this object will encapsulate. is not a valid handle. is null. is set to . An I/O error, such as a disk error, has occurred.-or-The stream has been closed.

Initializes a new instance of the class with the specified pipe direction and a string representation of the pipe handle.

One of the enumeration values that determines the direction of the pipe.Anonymous pipes can only be in one direction, so cannot be set to . A string that represents the pipe handle. is an invalid handle. is null. is set to .

Initializes a new instance of the class with the specified string representation of the pipe handle.

A string that represents the pipe handle. is not a valid pipe handle.

Sets the reading mode for the object.

Always . The transmission mode is not valid. For anonymous pipes, only is supported. The transmission mode is . The connection is broken or another I/O error occurs. The pipe is closed.

Gets the pipe transmission mode supported by the current pipe.

Always .

Exposes a stream around an anonymous pipe, which supports both synchronous and asynchronous read and write operations.

Initializes a new instance of the class.

Initializes a new instance of the class with the specified pipe direction.

One of the values that determines the direction of the pipe.Anonymous pipes can only be in one direction, so cannot be set to . is set to .

Initializes a new instance of the class from the specified pipe handles.

One of the values that determines the direction of the pipe.Anonymous pipes can only be in one direction, so cannot be set to . A for the pipe that this object will encapsulate. A for the object. or is an invalid handle. or is null. is set to . or is an invalid pipe handle.-or-An I/O error, such as a disk error, has occurred.-or-The stream has been closed.

Initializes a new instance of the class with the specified pipe direction and inheritability mode.

Initializes a new instance of the class with the specified pipe direction, inheritability mode, and buffer size.

One of the values that determines the direction of the pipe.Anonymous pipes can only be in one direction, so cannot be set to . One of the values that determines whether the underlying handle can be inherited by child processes. A positive value greater than or equal to 0, which specifies the buffer size. is not set to either or .-or- is less than 0. is set to .

Initializes a new instance of the class with the specified pipe direction, inheritability mode, buffer size, and pipe security.

One of the values that determines the direction of the pipe.Anonymous pipes can only be in one direction, so cannot be set to . One of the values that determines whether the underlying handle can be inherited by child processes. A positive value greater than 0, which specifies the buffer size. A object that determines the access control and audit security for the pipe. is not set to either or .-or- is less than 0. is set to .

Gets the safe handle for the object that is currently connected to the object.

A object for the object that is currently connected to the object.

Closes the local copy of the object's handle.

Gets the connected object's handle as a string.

A that represents the connected object's handle.

Sets the reading mode for the object.

One of the values that indicates how the object reads from the pipe. For anonymous pipes, transmission mode must be . Anonymous pipes do not support . The connection is broken or another I/O error occurs. The pipe is closed.

Gets the pipe transmission mode that is supported by the current pipe.

Always .

Exposes a around a named pipe, which supports both synchronous and asynchronous read and write operations.

Initializes a new instance of the class for the specified pipe handle with the specified pipe direction.

One of the values that determines the direction of the pipe. true to indicate that the handle was opened asynchronously; otherwise, false. true to indicate that the pipe is connected; otherwise, false. A object for the pipe that this object will encapsulate. is not a valid handle. is not a valid value. is not a valid pipe handle.

Initializes a new instance of the class with the specified pipe name.

The name of the pipe. is null. is a zero-length string. is set to "anonymous".

Initializes a new instance of the class with the specified pipe and server names.

The name of the remote computer to connect to, or "." to specify the local computer. The name of the pipe. is null.-or- is null. is a zero-length string.-or- is a zero-length string. is set to "anonymous".

Initializes a new instance of the class with the specified pipe and server names, and the specified pipe options, security impersonation level, and inheritability mode.

The name of the remote computer to connect to, or "." to specify the local computer. The name of the pipe. One of the values that specifies the desired access rights of the pipe. One of the values that determines how to open or create the pipe. One of the values that determines the security impersonation level. One of the values that determines whether the underlying handle will be inheritable by child processes. is null.-or- is null. is a zero-length string.-or- is a zero-length string. is set to "anonymous".-or- is not a valid value.-or- is not a valid value.-or- is not a valid value.

Initializes a new instance of the class with the specified pipe and server names, and the specified pipe direction.

The name of the remote computer to connect to, or "." to specify the local computer. The name of the pipe. One of the values that determines the direction of the pipe. is null.-or- is null. is a zero-length string.-or- is a zero-length string. is set to "anonymous".-or- is not a valid value.

Initializes a new instance of the class with the specified pipe and server names, and the specified pipe direction and pipe options.

The name of the remote computer to connect to, or "." to specify the local computer. The name of the pipe. One of the values that determines the direction of the pipe. One of the values that determines how to open or create the pipe. is null.-or- is null. is a zero-length string.-or- is a zero-length string. is set to "anonymous".-or- is not a valid value.-or- is not a valid value.

Initializes a new instance of the class with the specified pipe and server names, and the specified pipe direction, pipe options, and security impersonation level.

The name of the remote computer to connect to, or "." to specify the local computer. The name of the pipe. One of the values that determines the direction of the pipe. One of the values that determines how to open or create the pipe. One of the values that determines the security impersonation level. is null.-or- is null. is a zero-length string.-or- is a zero-length string. is set to "anonymous".-or- is not a valid value.-or- is not a valid value.-or- is not a valid value.

Initializes a new instance of the class with the specified pipe and server names, and the specified pipe direction, pipe options, security impersonation level, and inheritability mode.

The name of the remote computer to connect to, or "." to specify the local computer. The name of the pipe. One of the values that determines the direction of the pipe. One of the values that determines how to open or create the pipe. One of the values that determines the security impersonation level. One of the values that determines whether the underlying handle will be inheritable by child processes. is null.-or- is null. is a zero-length string.-or- is a zero-length string. is set to "anonymous".-or- is not a valid value.-or- is not a valid value.-or- is not a valid value.-or- is not a valid value.

Connects to a waiting server.

The client is already connected.

Connects to a waiting server within the specified time-out period.

The number of milliseconds to wait for the server to respond before the connection times out. Could not connect to the server within the specified . is less than 0. The client is already connected. The server is connected to another client and the time-out period has expired.

Gets the number of server instances that share the same pipe name.

The number of server instances that share the same pipe name. The pipe handle has not been set.-or-The current object has not yet connected to a object. The pipe is broken or an I/O error occurs. The underlying pipe handle is closed.

Exposes a around a named pipe, supporting both synchronous and asynchronous read and write operations.

Initializes a new instance of the class from the specified pipe handle.

One of the values that determines the direction of the pipe. true to indicate that the handle was opened asynchronously; otherwise, false. true to indicate that the pipe is connected; otherwise, false. A pipe handle for the pipe that this object will encapsulate. is not a valid value. is null. is an invalid handle. is not a valid pipe handle.-or-The maximum number of server instances has been exceeded.

Initializes a new instance of the class with the specified pipe name.

The name of the pipe. is null. is a zero-length string. is set to "anonymous". The operating system is Windows Millennium Edition, Windows 98, or Windows 95. The maximum number of server instances has been exceeded.

Initializes a new instance of the class with the specified pipe name and pipe direction.

The name of the pipe. One of the values that determines the direction of the pipe. is null. is a zero-length string. is set to "anonymous".-or- is not a valid value. The operating system is Windows Millennium Edition, Windows 98, or Windows 95. The maximum number of server instances has been exceeded.

Initializes a new instance of the class with the specified pipe name, pipe direction, and maximum number of server instances.

The name of the pipe. One of the values that determines the direction of the pipe. The maximum number of server instances that share the same name. is null. is a zero-length string. is set to "anonymous".-or- is not a valid value.-or-A non-negative number is required.-or- is less than one or greater than 254.-or- or is required.-or-Access rights is limited to the , , and flags. The operating system is Windows Millennium Edition, Windows 98, or Windows 95. The maximum number of server instances has been exceeded.

Initializes a new instance of the class with the specified pipe name, pipe direction, maximum number of server instances, and transmission mode.

The name of the pipe. One of the values that determines the direction of the pipe. The maximum number of server instances that share the same name. One of the values that determines the transmission mode of the pipe. is null. is a zero-length string. is set to "anonymous".-or- is not a valid value.-or- is less than one or greater than 254. The operating system is Windows Millennium Edition, Windows 98, or Windows 95. The maximum number of server instances has been exceeded.

Initializes a new instance of the class with the specified pipe name, pipe direction, maximum number of server instances, transmission mode, and pipe options.

Initializes a new instance of the class with the specified pipe name, pipe direction, maximum number of server instances, transmission mode, pipe options, and recommended in and out buffer sizes.

The name of the pipe. One of the values that determines the direction of the pipe. The maximum number of server instances that share the same name. One of the values that determines the transmission mode of the pipe. One of the values that determines how to open or create the pipe. A positive value greater than 0 that indicates the input buffer size. A positive value greater than 0 that indicates the output buffer size. is null. is a zero-length string. is set to "anonymous".-or- is not a valid value.-or- is less than one or greater than 254.-or- is not a valid value.-or- is negative. The operating system is Windows Millennium Edition, Windows 98, or Windows 95. The maximum number of server instances has been exceeded.

Initializes a new instance of the class with the specified pipe name, pipe direction, maximum number of server instances, transmission mode, pipe options, recommended in and out buffer sizes, and pipe security.

The name of the pipe. One of the values that determines the direction of the pipe. The maximum number of server instances that share the same name. One of the values that determines the transmission mode of the pipe. One of the values that determines how to open or create the pipe. A positive value greater than 0 that indicates the input buffer size. A positive value greater than 0 that indicates the output buffer size. A object that determines the access control and audit security for the pipe. is null. is a zero-length string. is set to "anonymous".-or- is not a valid value.-or- is less than one or greater than 254.-or- is not a valid value.-or- is negative. The operating system is Windows Millennium Edition, Windows 98, or Windows 95. The maximum number of server instances has been exceeded.

The name of the pipe. One of the values that determines the direction of the pipe. The maximum number of server instances that share the same name. One of the values that determines the transmission mode of the pipe. One of the values that determines how to open or create the pipe. A positive value greater than 0 that indicates the input buffer size. A positive value greater than 0 that indicates the output buffer size. A object that determines the access control and audit security for the pipe. One of the values that determines whether the underlying handle can be inherited by child processes. is null. is a zero-length string. is set to "anonymous".-or- is not a valid value.-or- is less than one or greater than 254.-or- is not a valid value.-or- is negative.-or- is not a valid value. The operating system is Windows Millennium Edition, Windows 98, or Windows 95. The maximum number of server instances has been exceeded.

The name of the pipe. One of the values that determines the direction of the pipe. The maximum number of server instances that share the same name. One of the values that determines the transmission mode of the pipe. One of the values that determines how to open or create the pipe. The input buffer size. The output buffer size. A object that determines the access control and audit security for the pipe. One of the values that determines whether the underlying handle can be inherited by child processes. One of the values that specifies the access rights of the pipe. is null. is a zero-length string. is set to "anonymous".-or- is not a valid value.-or- is less than one or greater than 254.-or- is not a valid value.-or- is negative.-or- is not a valid value.-or- is not a valid value. The operating system is Windows Millennium Edition, Windows 98, or Windows 95. The maximum number of server instances has been exceeded.

Begins an asynchronous operation to wait for a client to connect.

An object that references the asynchronous request. The method to call when a client connects to the object. A user-provided object that distinguishes this particular asynchronous request from other requests. The pipe was not opened asynchronously.-or-A pipe connection has already been established.-or-The pipe handle has not been set. The pipe connection has been broken. The pipe is closed.

Disconnects the current connection.

No pipe connections have been made yet.-or-The connected pipe has already disconnected.-or-The pipe handle has not been set. The pipe is closed.

Ends an asynchronous operation to wait for a client to connect.

The pending asynchronous request. is null. The pipe was not opened asynchronously.-or-The pipe handle has not been set. The pipe connection has been broken. The pipe is closed.

Gets the user name of the client on the other end of the pipe.

The user name of the client on the other end of the pipe. No pipe connections have been made yet.-or-The connected pipe has already disconnected.-or-The pipe handle has not been set. The pipe is closed. The pipe connection has been broken.-or-The user name of the client is longer than 19 characters.

Represents the maximum number of server instances that the system resources allow.

Calls a delegate while impersonating the client.

The delegate that specifies a method to call. No pipe connections have been made yet.-or-The connected pipe has already disconnected.-or-The pipe handle has not been set. The pipe is closed. The pipe connection has been broken.-or-An I/O error occurred.

Waits for a client to connect to this object.

A pipe connection has already been established.-or-The pipe handle has not been set. The pipe is closed. The pipe connection has been broken.

Defines the access rights to use when you create access and audit rules.

Specifies the right to read data from the pipe. This does not include the right to read file system attributes, extended file system attributes, or access and audit rules.

Specifies the right to write data to a pipe. This does not include the right to write file system attributes or extended file system attributes.

Specifies the right to read file system attributes from a pipe. This does not include the right to read data, extended file system attributes, or access and audit rules.

Specifies the right to write file system attributes to a pipe. This does not include the right to write data or extended file system attributes.

Specifies the right to read extended file system attributes from a pipe. This does not include the right to read data, file system attributes, or access and audit rules.

Specifies the right to write extended file system attributes to a pipe. This does not include the right to write file attributes or data.

Specifies the right to create a new pipe. Setting this right also sets the right.

Specifies the right to delete a pipe.

Specifies the right to read access and audit rules from the pipe. This does not include the right to read data, file system attributes, or extended file system attributes.

Specifies the right to change the security and audit rules that are associated with a pipe.

Specifies the right to change the owner of a pipe. Note that owners of a pipe have full access to that resource.

Specifies whether the application can wait for a pipe handle to synchronize with the completion of an I/O operation.

Specifies the right to exert full control over a pipe, and to modify access control and audit rules. This value represents the combination of all rights in this enumeration.

Specifies the right to read from the pipe. This right includes the , , , and rights.

Specifies the right to write to the pipe. This right includes the , , and rights.

Specifies the right to read and write from the pipe. This right includes the , , , , , , and rights.

Specifies the right to make changes to the system access control list (SACL).

Represents an abstraction of an access control entry (ACE) that defines an access rule for a pipe.

Initializes a new instance of the class with the specified identity, pipe access rights, and access control type.

An object that encapsulates a reference to a user account. One of the values that specifies the type of operation associated with the access rule. One of the values that specifies whether to allow or deny the operation.

Initializes a new instance of the class with the specified identity, pipe access rights, and access control type.

The name of the user account. One of the values that specifies the type of operation associated with the access rule. One of the values that specifies whether to allow or deny the operation.

Gets the flags that are associated with the current object.

A bitwise combination of the values.

Represents an abstraction of an access control entry (ACE) that defines an audit rule for a pipe.

Initializes a new instance of the class for a user account specified in a object.

Initializes a new instance of the class for a named user account.

The name of the user account. One of the values that specifies the type of operation associated with the access rule. One of the values that specifies when to perform auditing.

Gets the flags that are associated with the current object.

A bitwise combination of the values.

Specifies the direction of the pipe.

Specifies that the pipe direction is in.

Specifies that the pipe direction is out.

Specifies that the pipe direction is two-way.

Provides options for creating a object. This enumeration has a attribute that allows a bitwise combination of its member values.

Indicates that there are no additional parameters.

Indicates that the system should write through any intermediate cache and go directly to the pipe.

Indicates that the pipe can be used for asynchronous reading and writing.

Represents the access control and audit security for a pipe.

Initializes a new instance of the class.

Gets the of the securable object that is associated with the current object.

The type of the securable object that is associated with the current object.

Initializes a new instance of the class with the specified values.

The object that this method creates. The identity that the access rule applies to. It must be an object that can be cast as a object. The access mask of this rule. The access mask is a 32-bit collection of anonymous bits, the meaning of which is defined by the individual integrators true if this rule is inherited from a parent container; otherwise false. One of the values that specifies the inheritance properties of the access rule. One of the values that specifies whether inherited access rules are automatically propagated. The propagation flags are ignored if is set to . Specifies the valid access control type. , , , or specifies an invalid value. is null. -or- is zero. is neither of type nor of a type, such as , that can be converted to type .

Gets the of the object that is associated with the access rules of the current object.

The type of the object that is associated with the access rules of the current object.

Adds an access rule to the Discretionary Access Control List (DACL) that is associated with the current object.

The access rule to add. The parameter is null.

Adds an audit rule to the System Access Control List (SACL)that is associated with the current object.

The audit rule to add. The parameter is null.

Initializes a new instance of the class with the specified values.

The object that this method creates. The identity that the access rule applies to. It must be an object that can be cast as a object. The access mask of this rule. The access mask is a 32-bit collection of anonymous bits, the meaning of which is defined by the individual integrators true if this rule is inherited from a parent container; otherwise, false.. One of the values that specifies the inheritance properties of the access rule. One of the values that specifies whether inherited access rules are automatically propagated. The propagation flags are ignored if is set to . One of the values that specifies the valid access control type. The , , , or properties specify an invalid value. The property is null. -or-The property is zero. The property is neither of type nor of a type, such as , that can be converted to type .

Gets the object associated with the audit rules of the current object.

The type of the object that is associated with the audit rules of the current object.

Saves the specified sections of the security descriptor that is associated with the current object to permanent storage.

The handle of the securable object that the current object is associated with.

Saves the specified sections of the security descriptor that is associated with the current object to permanent storage.

The name of the securable object that the current object is associated with.

Removes an access rule from the Discretionary Access Control List (DACL) that is associated with the current object.

true if the operation is successful; otherwise, false. The access rule to remove. The parameter is null.

Removes the specified access rule from the Discretionary Access Control List (DACL) that is associated with the current object.

The access rule to remove. The parameter is null.

Removes an audit rule from the System Access Control List (SACL) that is associated with the current object.

true if the audit rule was removed; otherwise, false The audit rule to remove. The parameter is null.

Removes all audit rules that have the same security identifier as the specified audit rule from the System Access Control List (SACL) that is associated with the current object.

The audit rule to remove. The parameter is null.

Removes the specified audit rule from the System Access Control List (SACL) that is associated with the current object.

The audit rule to remove. The parameter is null.

Removes all access rules in the Discretionary Access Control List (DACL) that is associated with the current object and then adds the specified access rule.

The access rule to add. The parameter is null.

Sets an access rule in the Discretionary Access Control List (DACL) that is associated with the current object.

The rule to set. The parameter is null.

Sets an audit rule in the System Access Control List (SACL) that is associated with the current object.

The rule to set. The parameter is null.

Exposes a object around a pipe, which supports both anonymous and named pipes.

Initializes a new instance of the class using the specified value and buffer size.

One of the values that indicates the direction of the pipe object. A positive value greater than or equal to 0 that indicates the buffer size. is not a valid value.-or- is less than 0.

Initializes a new instance of the class using the specified , , and buffer size.

One of the values that indicates the direction of the pipe object. One of the values that indicates the transmission mode of the pipe object. A positive value greater than or equal to 0 that indicates the buffer size. is not a valid value.-or- is not a valid value.-or- is less than 0.

Begins an asynchronous read operation.

An object that references the asynchronous read. The buffer to read data into. The byte offset in at which to begin reading. The maximum number of bytes to read. The method to call when the asynchronous read operation is completed. A user-provided object that distinguishes this particular asynchronous read request from other requests. is null. is less than 0.-or- is less than 0. is greater than the number of bytes available in . The pipe is closed. The pipe does not support read operations. The pipe is disconnected, waiting to connect, or the handle has not been set. The pipe is broken or another I/O error occurred.

Begins an asynchronous write operation.

An object that references the asynchronous write operation. The buffer that contains the data to write to the current stream. The zero-based byte offset in at which to begin copying bytes to the current stream. The maximum number of bytes to write. The method to call when the asynchronous write operation is completed. A user-provided object that distinguishes this particular asynchronous write request from other requests. is null. is less than 0.-or- is less than 0. is greater than the number of bytes available in . The pipe is closed. The pipe does not support write operations. The pipe is disconnected, waiting to connect, or the handle has not been set. The pipe is broken or another I/O error occurred.

Gets a value indicating whether the current stream supports read operations.

true if the stream supports read operations; otherwise, false.

Gets a value indicating whether the current stream supports seek operations.

false in all cases.

Gets a value indicating whether the current stream supports write operations.

true if the stream supports write operations; otherwise, false.

Verifies that the pipe is in a proper state for getting or setting properties.

Verifies that the pipe is in a connected state for read operations.

Verifies that the pipe is in a connected state for write operations.

Releases the unmanaged resources used by the class and optionally releases the managed resources.

true to release both managed and unmanaged resources; false to release only unmanaged resources.

Ends a pending asynchronous read request.

The number of bytes that were read. A return value of 0 indicates the end of the stream (the pipe has been closed). The reference to the pending asynchronous request. is null. did not originate from a method on the current stream. The stream is closed or an internal error has occurred.

Ends a pending asynchronous write request.

The reference to the pending asynchronous request. is null. did not originate from a method on the current stream. The stream is closed or an internal error has occurred.

Clears the buffer for the current stream and causes any buffered data to be written to the underlying device.

The pipe is closed. The pipe does not support write operations. The pipe is broken or another I/O error occurred.

Gets a object that encapsulates the access control list (ACL) entries for the pipe described by the current object.

A object that encapsulates the access control list (ACL) entries for the pipe described by the current object. The pipe is closed. The underlying call to set security information failed. The underlying call to set security information failed. The underlying call to set security information failed.

Gets the size, in bytes, of the inbound buffer for a pipe.

An integer value that represents the inbound buffer size, in bytes. The pipe is waiting to connect. The pipe is broken or another I/O error occurred.

Initializes a object from the specified object.

The object of the pipe to initialize. true to expose the handle; otherwise, false. true to indicate that the handle was opened asynchronously; otherwise, false. A handle cannot be bound to the pipe.

Gets a value indicating whether a object was opened asynchronously or synchronously.

true if the object was opened asynchronously; otherwise, false.

Gets or sets a value indicating whether a object is connected.

true if the object is connected; otherwise, false.

Gets a value indicating whether a handle to a object is exposed.

true if a handle to the object is exposed; otherwise, false.

Gets a value indicating whether there is more data in the message returned from the most recent read operation.

true if there are no more characters to read in the message; otherwise, false. The pipe is not connected.-or-The pipe handle has not been set.-or-The pipe's property value is not . The pipe is closed.

Gets the length of a stream, in bytes.

0 in all cases. Always thrown.

Gets the size, in bytes, of the outbound buffer for a pipe.

The outbound buffer size, in bytes. The pipe is waiting to connect. The pipe is broken or another I/O error occurred.

Gets or sets the current position of the current stream.

0 in all cases. Always thrown.

Reads a block of bytes from a stream and writes the data to a specified buffer.

The total number of bytes that are read into . This might be less than the number of bytes requested if that number of bytes is not currently available, or 0 if the end of the stream is reached. When this method returns, contains the specified byte array with the values between and ( + - 1) replaced by the bytes read from the current source. The byte offset in the array at which the bytes that are read will be placed. The maximum number of bytes to read. is null. is less than 0.-or- is less than 0. is greater than the number of bytes available in . The pipe is closed. The pipe does not support read operations. The pipe is disconnected, waiting to connect, or the handle has not been set. Any I/O error occurred.

Reads a byte from a pipe.

The byte, cast to , or -1 indicates the end of the stream (the pipe has been closed). The pipe is closed. The pipe does not support read operations. The pipe is disconnected, waiting to connect, or the handle has not been set. Any I/O error occurred.

Gets or sets the reading mode for a object.

One of the values that indicates how the object reads from the pipe. The supplied value is not a valid value. The handle has not been set.-or-The pipe is waiting to connect with a named client. The pipe is broken or an I/O error occurred with a named client.

Gets the safe handle for the local end of the pipe that the current object encapsulates.

A object for the pipe that is encapsulated by the current object. The pipe handle has not been set. The pipe is closed.

Sets the current position of the current stream to the specified value.

The new position in the stream. The point, relative to , to begin seeking from. Specifies the beginning, the end, or the current position as a reference point for , using a value of type .

Applies the access control list (ACL) entries specified by a object to the pipe specified by the current object.

A object that specifies an access control list (ACL) entry to apply to the current pipe. The pipe is closed. is null. The underlying call to set security information failed. The underlying call to set security information failed. The underlying call to set security information failed.

Sets the length of the current stream to the specified value.

The new length of the stream.

Gets the pipe transmission mode supported by the current pipe.

One of the values that indicates the transmission mode supported by the current pipe. The pipe is closed. The handle has not been set.-or-The pipe is waiting to connect in an anonymous client/server operation or with a named client. The pipe is broken or another I/O error occurred.

Waits for the other end of the pipe to read all sent bytes.

The pipe is closed. The pipe does not support write operations. The pipe is broken or another I/O error occurred.

Writes a block of bytes to the current stream using data from a buffer.

The buffer that contains data to write to the pipe. The zero-based byte offset in at which to begin copying bytes to the current stream. The maximum number of bytes to write to the current stream. is null. is less than 0.-or- is less than 0. is greater than the number of bytes available in . The pipe is closed. The pipe does not support write operations. The pipe is broken or another I/O error occurred.

Writes a byte to the current stream.

The byte to write to the stream. The pipe is closed. The pipe does not support write operations. The pipe is disconnected, waiting to connect, or the handle has not been set. The pipe is broken or another I/O error occurred.

Represents the method to call as the client.

Specifies the transmission mode of the pipe.

Indicates that data in the pipe is transmitted and read as a stream of bytes.

Indicates that data in the pipe is transmitted and read as a stream of messages.

Provides a set of static (Shared in Visual Basic) methods for querying objects that implement .

Applies an accumulator function over a sequence.

The final accumulator value. An to aggregate over. An accumulator function to be invoked on each element. The type of the elements of . or is null. contains no elements.

Applies an accumulator function over a sequence. The specified seed value is used as the initial accumulator value.

The final accumulator value. An to aggregate over. The initial accumulator value. An accumulator function to be invoked on each element. The type of the elements of . The type of the accumulator value. or is null.

Applies an accumulator function over a sequence. The specified seed value is used as the initial accumulator value, and the specified function is used to select the result value.

The transformed final accumulator value. An to aggregate over. The initial accumulator value. An accumulator function to be invoked on each element. A function to transform the final accumulator value into the result value. The type of the elements of . The type of the accumulator value. The type of the resulting value. or or is null.

Determines whether all elements of a sequence satisfy a condition.

true if every element of the source sequence passes the test in the specified predicate, or if the sequence is empty; otherwise, false. An that contains the elements to apply the predicate to. A function to test each element for a condition. The type of the elements of . or is null.

Determines whether a sequence contains any elements.

true if the source sequence contains any elements; otherwise, false. The to check for emptiness. The type of the elements of . is null.

Determines whether any element of a sequence satisfies a condition.

true if any elements in the source sequence pass the test in the specified predicate; otherwise, false. An whose elements to apply the predicate to. A function to test each element for a condition. The type of the elements of . or is null.

Returns the input typed as .

The input sequence typed as . The sequence to type as . The type of the elements of .

Computes the average of a sequence of values.

The average of the sequence of values. A sequence of values to calculate the average of. is null. contains no elements. The sum of the elements in the sequence is larger than .

Computes the average of a sequence of values.

The average of the sequence of values. A sequence of values to calculate the average of. is null. contains no elements.

Computes the average of a sequence of values.

The average of the sequence of values. A sequence of values to calculate the average of. is null. contains no elements. The sum of the elements in the sequence is larger than .

Computes the average of a sequence of values.

The average of the sequence of values. A sequence of values to calculate the average of. is null. contains no elements. The sum of the elements in the sequence is larger than .

Computes the average of a sequence of nullable values.

The average of the sequence of values, or null if the source sequence is empty or contains only values that are null. A sequence of nullable values to calculate the average of. is null. The sum of the elements in the sequence is larger than .

Computes the average of a sequence of nullable values.

The average of the sequence of values, or null if the source sequence is empty or contains only values that are null. A sequence of nullable values to calculate the average of. is null.

Computes the average of a sequence of nullable values.

The average of the sequence of values, or null if the source sequence is empty or contains only values that are null. A sequence of nullable values to calculate the average of. is null.

Computes the average of a sequence of values.

The average of the sequence of values. A sequence of values to calculate the average of. is null. contains no elements.

Computes the average of a sequence of values that are obtained by invoking a transform function on each element of the input sequence.

The average of the sequence of values. A sequence of values that are used to calculate an average. A transform function to apply to each element. The type of the elements of . or is null. contains no elements. The sum of the elements in the sequence is larger than .

Computes the average of a sequence of values that are obtained by invoking a transform function on each element of the input sequence.

The average of the sequence of values. A sequence of values to calculate the average of. A transform function to apply to each element. The type of the elements of . or is null. contains no elements.

Computes the average of a sequence of values that are obtained by invoking a transform function on each element of the input sequence.

The average of the sequence of values. A sequence of values to calculate the average of. A transform function to apply to each element. The type of the elements of . or is null. contains no elements. The sum of the elements in the sequence is larger than .

Computes the average of a sequence of values that are obtained by invoking a transform function on each element of the input sequence.

The average of the sequence of values. A sequence of values to calculate the average of. A transform function to apply to each element. The type of the elements of source. or is null. contains no elements. The sum of the elements in the sequence is larger than .

Computes the average of a sequence of nullable values that are obtained by invoking a transform function on each element of the input sequence.

The average of the sequence of values, or null if the source sequence is empty or contains only values that are null. A sequence of values to calculate the average of. A transform function to apply to each element. The type of the elements of . or is null. The sum of the elements in the sequence is larger than .

Computes the average of a sequence of nullable values that are obtained by invoking a transform function on each element of the input sequence.

Computes the average of a sequence of values that are obtained by invoking a transform function on each element of the input sequence.

The average of the sequence of values. A sequence of values to calculate the average of. A transform function to apply to each element. The type of the elements of . or is null. contains no elements.

Converts the elements of an to the specified type.

An that contains each element of the source sequence converted to the specified type. The that contains the elements to be converted. The type to convert the elements of to. is null. An element in the sequence cannot be cast to type .

Concatenates two sequences.

An that contains the concatenated elements of the two input sequences. The first sequence to concatenate. The sequence to concatenate to the first sequence. The type of the elements of the input sequences. or is null.

Determines whether a sequence contains a specified element by using the default equality comparer.

true if the source sequence contains an element that has the specified value; otherwise, false. A sequence in which to locate a value. The value to locate in the sequence. The type of the elements of . is null.

Determines whether a sequence contains a specified element by using a specified .

true if the source sequence contains an element that has the specified value; otherwise, false. A sequence in which to locate a value. The value to locate in the sequence. An equality comparer to compare values. The type of the elements of . is null.

Returns the number of elements in a sequence.

The number of elements in the input sequence. A sequence that contains elements to be counted. The type of the elements of . is null. The number of elements in is larger than .

Returns a number that represents how many elements in the specified sequence satisfy a condition.

A number that represents how many elements in the sequence satisfy the condition in the predicate function. A sequence that contains elements to be tested and counted. A function to test each element for a condition. The type of the elements of . or is null. The number of elements in is larger than .

Returns the elements of the specified sequence or the type parameter's default value in a singleton collection if the sequence is empty.

An object that contains the default value for the type if is empty; otherwise, . The sequence to return a default value for if it is empty. The type of the elements of . is null.

Returns the elements of the specified sequence or the specified value in a singleton collection if the sequence is empty.

An that contains if is empty; otherwise, . The sequence to return the specified value for if it is empty. The value to return if the sequence is empty. The type of the elements of .

Returns distinct elements from a sequence by using the default equality comparer to compare values.

An that contains distinct elements from the source sequence. The sequence to remove duplicate elements from. The type of the elements of . is null.

Returns distinct elements from a sequence by using a specified to compare values.

An that contains distinct elements from the source sequence. The sequence to remove duplicate elements from. An to compare values. The type of the elements of . is null.

Returns the element at a specified index in a sequence.

The element at the specified position in the source sequence. An to return an element from. The zero-based index of the element to retrieve. The type of the elements of . is null. is less than 0 or greater than or equal to the number of elements in .

Returns the element at a specified index in a sequence or a default value if the index is out of range.

default() if the index is outside the bounds of the source sequence; otherwise, the element at the specified position in the source sequence. An to return an element from. The zero-based index of the element to retrieve. The type of the elements of . is null.

Returns an empty that has the specified type argument.

An empty whose type argument is . The type to assign to the type parameter of the returned generic .

Produces the set difference of two sequences by using the default equality comparer to compare values.

A sequence that contains the set difference of the elements of two sequences. An whose elements that are not also in will be returned. An whose elements that also occur in the first sequence will cause those elements to be removed from the returned sequence. The type of the elements of the input sequences. or is null.

Produces the set difference of two sequences by using the specified to compare values.

A sequence that contains the set difference of the elements of two sequences. An whose elements that are not also in will be returned. An whose elements that also occur in the first sequence will cause those elements to be removed from the returned sequence. An to compare values. The type of the elements of the input sequences. or is null.

Returns the first element of a sequence.

The first element in the specified sequence. The to return the first element of. The type of the elements of . is null. The source sequence is empty.

Returns the first element in a sequence that satisfies a specified condition.

The first element in the sequence that passes the test in the specified predicate function. An to return an element from. A function to test each element for a condition. The type of the elements of . or is null. No element satisfies the condition in .-or-The source sequence is empty.

Returns the first element of a sequence, or a default value if the sequence contains no elements.

default() if is empty; otherwise, the first element in . The to return the first element of. The type of the elements of . is null.

Returns the first element of the sequence that satisfies a condition or a default value if no such element is found.

default() if is empty or if no element passes the test specified by ; otherwise, the first element in that passes the test specified by . An to return an element from. A function to test each element for a condition. The type of the elements of . or is null.

Groups the elements of a sequence according to a specified key selector function.

An IEnumerable<IGrouping<TKey, TSource>> in C# or IEnumerable(Of IGrouping(Of TKey, TSource)) in Visual Basic where each object contains a sequence of objects and a key. An whose elements to group. A function to extract the key for each element. The type of the elements of . The type of the key returned by . or is null.

Groups the elements of a sequence according to a specified key selector function and compares the keys by using a specified comparer.

An IEnumerable<IGrouping<TKey, TSource>> in C# or IEnumerable(Of IGrouping(Of TKey, TSource)) in Visual Basic where each object contains a collection of objects and a key. An whose elements to group. A function to extract the key for each element. An to compare keys. The type of the elements of . The type of the key returned by . or is null.

Groups the elements of a sequence according to a specified key selector function and projects the elements for each group by using a specified function.

An IEnumerable<IGrouping<TKey, TElement>> in C# or IEnumerable(Of IGrouping(Of TKey, TElement)) in Visual Basic where each object contains a collection of objects of type and a key. An whose elements to group. A function to extract the key for each element. A function to map each source element to an element in the . The type of the elements of . The type of the key returned by . The type of the elements in the . or or is null.

Groups the elements of a sequence according to a key selector function. The keys are compared by using a comparer and each group's elements are projected by using a specified function.

An IEnumerable<IGrouping<TKey, TElement>> in C# or IEnumerable(Of IGrouping(Of TKey, TElement)) in Visual Basic where each object contains a collection of objects of type and a key. An whose elements to group. A function to extract the key for each element. A function to map each source element to an element in an . An to compare keys. The type of the elements of . The type of the key returned by . The type of the elements in the . or or is null.

Groups the elements of a sequence according to a specified key selector function and creates a result value from each group and its key. The elements of each group are projected by using a specified function.

A collection of elements of type where each element represents a projection over a group and its key. An whose elements to group. A function to extract the key for each element. A function to map each source element to an element in an . A function to create a result value from each group. The type of the elements of . The type of the key returned by . The type of the elements in each . The type of the result value returned by .

Groups the elements of a sequence according to a specified key selector function and creates a result value from each group and its key. Key values are compared by using a specified comparer, and the elements of each group are projected by using a specified function.

A collection of elements of type where each element represents a projection over a group and its key. An whose elements to group. A function to extract the key for each element. A function to map each source element to an element in an . A function to create a result value from each group. An to compare keys with. The type of the elements of . The type of the key returned by . The type of the elements in each . The type of the result value returned by .

Groups the elements of a sequence according to a specified key selector function and creates a result value from each group and its key.

A collection of elements of type where each element represents a projection over a group and its key. An whose elements to group. A function to extract the key for each element. A function to create a result value from each group. The type of the elements of . The type of the key returned by . The type of the result value returned by .

Groups the elements of a sequence according to a specified key selector function and creates a result value from each group and its key. The keys are compared by using a specified comparer.

A collection of elements of type where each element represents a projection over a group and its key. An whose elements to group. A function to extract the key for each element. A function to create a result value from each group. An to compare keys with. The type of the elements of . The type of the key returned by . The type of the result value returned by .

Correlates the elements of two sequences based on equality of keys and groups the results. The default equality comparer is used to compare keys.

An that contains elements of type that are obtained by performing a grouped join on two sequences. The first sequence to join. The sequence to join to the first sequence. A function to extract the join key from each element of the first sequence. A function to extract the join key from each element of the second sequence. A function to create a result element from an element from the first sequence and a collection of matching elements from the second sequence. The type of the elements of the first sequence. The type of the elements of the second sequence. The type of the keys returned by the key selector functions. The type of the result elements. or or or or is null.

Correlates the elements of two sequences based on key equality and groups the results. A specified is used to compare keys.

An that contains elements of type that are obtained by performing a grouped join on two sequences. The first sequence to join. The sequence to join to the first sequence. A function to extract the join key from each element of the first sequence. A function to extract the join key from each element of the second sequence. A function to create a result element from an element from the first sequence and a collection of matching elements from the second sequence. An to hash and compare keys. The type of the elements of the first sequence. The type of the elements of the second sequence. The type of the keys returned by the key selector functions. The type of the result elements. or or or or is null.

Produces the set intersection of two sequences by using the default equality comparer to compare values.

A sequence that contains the elements that form the set intersection of two sequences. An whose distinct elements that also appear in will be returned. An whose distinct elements that also appear in the first sequence will be returned. The type of the elements of the input sequences. or is null.

Produces the set intersection of two sequences by using the specified to compare values.

A sequence that contains the elements that form the set intersection of two sequences. An whose distinct elements that also appear in will be returned. An whose distinct elements that also appear in the first sequence will be returned. An to compare values. The type of the elements of the input sequences. or is null.

Correlates the elements of two sequences based on matching keys. The default equality comparer is used to compare keys.

An that has elements of type that are obtained by performing an inner join on two sequences. The first sequence to join. The sequence to join to the first sequence. A function to extract the join key from each element of the first sequence. A function to extract the join key from each element of the second sequence. A function to create a result element from two matching elements. The type of the elements of the first sequence. The type of the elements of the second sequence. The type of the keys returned by the key selector functions. The type of the result elements. or or or or is null.

Correlates the elements of two sequences based on matching keys. A specified is used to compare keys.

An that has elements of type that are obtained by performing an inner join on two sequences. The first sequence to join. The sequence to join to the first sequence. A function to extract the join key from each element of the first sequence. A function to extract the join key from each element of the second sequence. A function to create a result element from two matching elements. An to hash and compare keys. The type of the elements of the first sequence. The type of the elements of the second sequence. The type of the keys returned by the key selector functions. The type of the result elements. or or or or is null.

Returns the last element of a sequence.

The value at the last position in the source sequence. An to return the last element of. The type of the elements of . is null. The source sequence is empty.

Returns the last element of a sequence that satisfies a specified condition.

The last element in the sequence that passes the test in the specified predicate function. An to return an element from. A function to test each element for a condition. The type of the elements of . or is null. No element satisfies the condition in .-or-The source sequence is empty.

Returns the last element of a sequence, or a default value if the sequence contains no elements.

default() if the source sequence is empty; otherwise, the last element in the . An to return the last element of. The type of the elements of . is null.

Returns the last element of a sequence that satisfies a condition or a default value if no such element is found.

default() if the sequence is empty or if no elements pass the test in the predicate function; otherwise, the last element that passes the test in the predicate function. An to return an element from. A function to test each element for a condition. The type of the elements of . or is null.

Returns an that represents the total number of elements in a sequence.

The number of elements in the source sequence. An that contains the elements to be counted. The type of the elements of . is null. The number of elements exceeds .

Returns an that represents how many elements in a sequence satisfy a condition.

A number that represents how many elements in the sequence satisfy the condition in the predicate function. An that contains the elements to be counted. A function to test each element for a condition. The type of the elements of . or is null. The number of matching elements exceeds .

Returns the maximum value in a sequence of values.

The maximum value in the sequence. A sequence of values to determine the maximum value of. is null. contains no elements.

Returns the maximum value in a sequence of values.

The maximum value in the sequence. A sequence of values to determine the maximum value of. is null. contains no elements.

Returns the maximum value in a sequence of values.

The maximum value in the sequence. A sequence of values to determine the maximum value of. is null. contains no elements.

Returns the maximum value in a sequence of values.

The maximum value in the sequence. A sequence of values to determine the maximum value of. is null. contains no elements.

Returns the maximum value in a sequence of nullable values.

A value of type Nullable<Decimal> in C# or Nullable(Of Decimal) in Visual Basic that corresponds to the maximum value in the sequence. A sequence of nullable values to determine the maximum value of. is null.

Returns the maximum value in a sequence of nullable values.

A value of type Nullable<Double> in C# or Nullable(Of Double) in Visual Basic that corresponds to the maximum value in the sequence. A sequence of nullable values to determine the maximum value of. is null.

Returns the maximum value in a sequence of nullable values.

A value of type Nullable<Int32> in C# or Nullable(Of Int32) in Visual Basic that corresponds to the maximum value in the sequence. A sequence of nullable values to determine the maximum value of. is null.

Returns the maximum value in a sequence of nullable values.

A value of type Nullable<Int64> in C# or Nullable(Of Int64) in Visual Basic that corresponds to the maximum value in the sequence. A sequence of nullable values to determine the maximum value of. is null.

Returns the maximum value in a sequence of nullable values.

A value of type Nullable<Single> in C# or Nullable(Of Single) in Visual Basic that corresponds to the maximum value in the sequence. A sequence of nullable values to determine the maximum value of. is null.

Returns the maximum value in a sequence of values.

The maximum value in the sequence. A sequence of values to determine the maximum value of. is null. contains no elements.

Returns the maximum value in a generic sequence.

The maximum value in the sequence. A sequence of values to determine the maximum value of. The type of the elements of . is null.

Invokes a transform function on each element of a sequence and returns the maximum value.

The maximum value in the sequence. A sequence of values to determine the maximum value of. A transform function to apply to each element. The type of the elements of . or is null. contains no elements.

Invokes a transform function on each element of a sequence and returns the maximum value.

Invokes a transform function on each element of a sequence and returns the maximum nullable value.

The value of type Nullable<Decimal> in C# or Nullable(Of Decimal) in Visual Basic that corresponds to the maximum value in the sequence. A sequence of values to determine the maximum value of. A transform function to apply to each element. The type of the elements of . or is null.

Invokes a transform function on each element of a sequence and returns the maximum nullable value.

The value of type Nullable<Double> in C# or Nullable(Of Double) in Visual Basic that corresponds to the maximum value in the sequence. A sequence of values to determine the maximum value of. A transform function to apply to each element. The type of the elements of . or is null.

Invokes a transform function on each element of a sequence and returns the maximum nullable value.

The value of type Nullable<Int32> in C# or Nullable(Of Int32) in Visual Basic that corresponds to the maximum value in the sequence. A sequence of values to determine the maximum value of. A transform function to apply to each element. The type of the elements of . or is null.

Invokes a transform function on each element of a sequence and returns the maximum nullable value.

The value of type Nullable<Int64> in C# or Nullable(Of Int64) in Visual Basic that corresponds to the maximum value in the sequence. A sequence of values to determine the maximum value of. A transform function to apply to each element. The type of the elements of . or is null.

Invokes a transform function on each element of a sequence and returns the maximum nullable value.

The value of type Nullable<Single> in C# or Nullable(Of Single) in Visual Basic that corresponds to the maximum value in the sequence. A sequence of values to determine the maximum value of. A transform function to apply to each element. The type of the elements of . or is null.

Invokes a transform function on each element of a sequence and returns the maximum value.

Invokes a transform function on each element of a generic sequence and returns the maximum resulting value.

The maximum value in the sequence. A sequence of values to determine the maximum value of. A transform function to apply to each element. The type of the elements of . The type of the value returned by . or is null.

Returns the minimum value in a sequence of values.

The minimum value in the sequence. A sequence of values to determine the minimum value of. is null. contains no elements.

Returns the minimum value in a sequence of values.

The minimum value in the sequence. A sequence of values to determine the minimum value of. is null. contains no elements.

Returns the minimum value in a sequence of values.

The minimum value in the sequence. A sequence of values to determine the minimum value of. is null. contains no elements.

Returns the minimum value in a sequence of values.

The minimum value in the sequence. A sequence of values to determine the minimum value of. is null. contains no elements.

Returns the minimum value in a sequence of nullable values.

A value of type Nullable<Decimal> in C# or Nullable(Of Decimal) in Visual Basic that corresponds to the minimum value in the sequence. A sequence of nullable values to determine the minimum value of. is null.

Returns the minimum value in a sequence of nullable values.

A value of type Nullable<Double> in C# or Nullable(Of Double) in Visual Basic that corresponds to the minimum value in the sequence. A sequence of nullable values to determine the minimum value of. is null.

Returns the minimum value in a sequence of nullable values.

A value of type Nullable<Int32> in C# or Nullable(Of Int32) in Visual Basic that corresponds to the minimum value in the sequence. A sequence of nullable values to determine the minimum value of. is null.

Returns the minimum value in a sequence of nullable values.

A value of type Nullable<Int64> in C# or Nullable(Of Int64) in Visual Basic that corresponds to the minimum value in the sequence. A sequence of nullable values to determine the minimum value of. is null.

Returns the minimum value in a sequence of nullable values.

A value of type Nullable<Single> in C# or Nullable(Of Single) in Visual Basic that corresponds to the minimum value in the sequence. A sequence of nullable values to determine the minimum value of. is null.

Returns the minimum value in a sequence of values.

The minimum value in the sequence. A sequence of values to determine the minimum value of. is null. contains no elements.

Returns the minimum value in a generic sequence.

The minimum value in the sequence. A sequence of values to determine the minimum value of. The type of the elements of . is null.

Invokes a transform function on each element of a sequence and returns the minimum value.

The minimum value in the sequence. A sequence of values to determine the minimum value of. A transform function to apply to each element. The type of the elements of . or is null. contains no elements.

Invokes a transform function on each element of a sequence and returns the minimum value.

Invokes a transform function on each element of a sequence and returns the minimum nullable value.

The value of type Nullable<Decimal> in C# or Nullable(Of Decimal) in Visual Basic that corresponds to the minimum value in the sequence. A sequence of values to determine the minimum value of. A transform function to apply to each element. The type of the elements of . or is null.

Invokes a transform function on each element of a sequence and returns the minimum nullable value.

The value of type Nullable<Double> in C# or Nullable(Of Double) in Visual Basic that corresponds to the minimum value in the sequence. A sequence of values to determine the minimum value of. A transform function to apply to each element. The type of the elements of . or is null.

Invokes a transform function on each element of a sequence and returns the minimum nullable value.

The value of type Nullable<Int32> in C# or Nullable(Of Int32) in Visual Basic that corresponds to the minimum value in the sequence. A sequence of values to determine the minimum value of. A transform function to apply to each element. The type of the elements of . or is null.

Invokes a transform function on each element of a sequence and returns the minimum nullable value.

The value of type Nullable<Int64> in C# or Nullable(Of Int64) in Visual Basic that corresponds to the minimum value in the sequence. A sequence of values to determine the minimum value of. A transform function to apply to each element. The type of the elements of . or is null.

Invokes a transform function on each element of a sequence and returns the minimum nullable value.

The value of type Nullable<Single> in C# or Nullable(Of Single) in Visual Basic that corresponds to the minimum value in the sequence. A sequence of values to determine the minimum value of. A transform function to apply to each element. The type of the elements of . or is null.

Invokes a transform function on each element of a sequence and returns the minimum value.

Invokes a transform function on each element of a generic sequence and returns the minimum resulting value.

The minimum value in the sequence. A sequence of values to determine the minimum value of. A transform function to apply to each element. The type of the elements of . The type of the value returned by . or is null.

Filters the elements of an based on a specified type.

An that contains elements from the input sequence of type . The whose elements to filter. The type to filter the elements of the sequence on. is null.

Sorts the elements of a sequence in ascending order according to a key.

An whose elements are sorted according to a key. A sequence of values to order. A function to extract a key from an element. The type of the elements of . The type of the key returned by . or is null.

Sorts the elements of a sequence in ascending order by using a specified comparer.

An whose elements are sorted according to a key. A sequence of values to order. A function to extract a key from an element. An to compare keys. The type of the elements of . The type of the key returned by . or is null.

Sorts the elements of a sequence in descending order according to a key.

An whose elements are sorted in descending order according to a key. A sequence of values to order. A function to extract a key from an element. The type of the elements of . The type of the key returned by . or is null.

Sorts the elements of a sequence in descending order by using a specified comparer.

An whose elements are sorted in descending order according to a key. A sequence of values to order. A function to extract a key from an element. An to compare keys. The type of the elements of . The type of the key returned by . or is null.

Generates a sequence of integral numbers within a specified range.

An IEnumerable<Int32> in C# or IEnumerable(Of Int32) in Visual Basic that contains a range of sequential integral numbers. The value of the first integer in the sequence. The number of sequential integers to generate. is less than 0.-or- + -1 is larger than .

Generates a sequence that contains one repeated value.

An that contains a repeated value. The value to be repeated. The number of times to repeat the value in the generated sequence. The type of the value to be repeated in the result sequence. is less than 0.

Inverts the order of the elements in a sequence.

A sequence whose elements correspond to those of the input sequence in reverse order. A sequence of values to reverse. The type of the elements of . is null.

Projects each element of a sequence into a new form.

An whose elements are the result of invoking the transform function on each element of . A sequence of values to invoke a transform function on. A transform function to apply to each element. The type of the elements of . The type of the value returned by . or is null.

Projects each element of a sequence into a new form by incorporating the element's index.

An whose elements are the result of invoking the transform function on each element of . A sequence of values to invoke a transform function on. A transform function to apply to each source element; the second parameter of the function represents the index of the source element. The type of the elements of . The type of the value returned by . or is null.

Projects each element of a sequence to an , flattens the resulting sequences into one sequence, and invokes a result selector function on each element therein.

An whose elements are the result of invoking the one-to-many transform function on each element of and then mapping each of those sequence elements and their corresponding source element to a result element. A sequence of values to project. A transform function to apply to each element of the input sequence. A transform function to apply to each element of the intermediate sequence. The type of the elements of . The type of the intermediate elements collected by . The type of the elements of the resulting sequence. or or is null.

Projects each element of a sequence to an and flattens the resulting sequences into one sequence.

An whose elements are the result of invoking the one-to-many transform function on each element of the input sequence. A sequence of values to project. A transform function to apply to each element. The type of the elements of . The type of the elements of the sequence returned by . or is null.

Projects each element of a sequence to an , flattens the resulting sequences into one sequence, and invokes a result selector function on each element therein. The index of each source element is used in the intermediate projected form of that element.

An whose elements are the result of invoking the one-to-many transform function on each element of and then mapping each of those sequence elements and their corresponding source element to a result element. A sequence of values to project. A transform function to apply to each source element; the second parameter of the function represents the index of the source element. A transform function to apply to each element of the intermediate sequence. The type of the elements of . The type of the intermediate elements collected by . The type of the elements of the resulting sequence. or or is null.

Projects each element of a sequence to an , and flattens the resulting sequences into one sequence. The index of each source element is used in the projected form of that element.

An whose elements are the result of invoking the one-to-many transform function on each element of an input sequence. A sequence of values to project. A transform function to apply to each source element; the second parameter of the function represents the index of the source element. The type of the elements of . The type of the elements of the sequence returned by . or is null.

Determines whether two sequences are equal by comparing the elements by using the default equality comparer for their type.

true if the two source sequences are of equal length and their corresponding elements are equal according to the default equality comparer for their type; otherwise, false. An to compare to . An to compare to the first sequence. The type of the elements of the input sequences. or is null.

Determines whether two sequences are equal by comparing their elements by using a specified .

true if the two source sequences are of equal length and their corresponding elements compare equal according to ; otherwise, false. An to compare to . An to compare to the first sequence. An to use to compare elements. The type of the elements of the input sequences. or is null.

Returns the only element of a sequence, and throws an exception if there is not exactly one element in the sequence.

The single element of the input sequence. An to return the single element of. The type of the elements of . is null. The input sequence contains more than one element.-or-The input sequence is empty.

Returns the only element of a sequence that satisfies a specified condition, and throws an exception if more than one such element exists.

The single element of the input sequence that satisfies a condition. An to return a single element from. A function to test an element for a condition. The type of the elements of . or is null. No element satisfies the condition in .-or-More than one element satisfies the condition in .-or-The source sequence is empty.

Returns the only element of a sequence, or a default value if the sequence is empty; this method throws an exception if there is more than one element in the sequence.

The single element of the input sequence, or default() if the sequence contains no elements. An to return the single element of. The type of the elements of . is null. The input sequence contains more than one element.

Returns the only element of a sequence that satisfies a specified condition or a default value if no such element exists; this method throws an exception if more than one element satisfies the condition.

The single element of the input sequence that satisfies the condition, or default() if no such element is found. An to return a single element from. A function to test an element for a condition. The type of the elements of . or is null. More than one element satisfies the condition in .

Bypasses a specified number of elements in a sequence and then returns the remaining elements.

An that contains the elements that occur after the specified index in the input sequence. An to return elements from. The number of elements to skip before returning the remaining elements. The type of the elements of . is null.

Bypasses elements in a sequence as long as a specified condition is true and then returns the remaining elements.

An that contains the elements from the input sequence starting at the first element in the linear series that does not pass the test specified by . An to return elements from. A function to test each element for a condition. The type of the elements of . or is null.

Bypasses elements in a sequence as long as a specified condition is true and then returns the remaining elements. The element's index is used in the logic of the predicate function.

An that contains the elements from the input sequence starting at the first element in the linear series that does not pass the test specified by . An to return elements from. A function to test each source element for a condition; the second parameter of the function represents the index of the source element. The type of the elements of . or is null.

Computes the sum of a sequence of values.

The sum of the values in the sequence. A sequence of values to calculate the sum of. is null. The sum is larger than .

Computes the sum of a sequence of values.

The sum of the values in the sequence. A sequence of values to calculate the sum of. is null.

Computes the sum of a sequence of values.

The sum of the values in the sequence. A sequence of values to calculate the sum of. is null. The sum is larger than .

Computes the sum of a sequence of values.

The sum of the values in the sequence. A sequence of values to calculate the sum of. is null. The sum is larger than .

Computes the sum of a sequence of nullable values.

The sum of the values in the sequence. A sequence of nullable values to calculate the sum of. is null. The sum is larger than .

Computes the sum of a sequence of nullable values.

The sum of the values in the sequence. A sequence of nullable values to calculate the sum of. is null.

Computes the sum of a sequence of nullable values.

The sum of the values in the sequence. A sequence of nullable values to calculate the sum of. is null. The sum is larger than .

Computes the sum of a sequence of nullable values.

The sum of the values in the sequence. A sequence of nullable values to calculate the sum of. is null. The sum is larger than .

Computes the sum of a sequence of nullable values.

The sum of the values in the sequence. A sequence of nullable values to calculate the sum of. is null.

Computes the sum of a sequence of values.

The sum of the values in the sequence. A sequence of values to calculate the sum of. is null.

Computes the sum of the sequence of values that are obtained by invoking a transform function on each element of the input sequence.

The sum of the projected values. A sequence of values that are used to calculate a sum. A transform function to apply to each element. The type of the elements of . or is null. The sum is larger than .

Computes the sum of the sequence of values that are obtained by invoking a transform function on each element of the input sequence.

The sum of the projected values. A sequence of values that are used to calculate a sum. A transform function to apply to each element. The type of the elements of . or is null.

Computes the sum of the sequence of values that are obtained by invoking a transform function on each element of the input sequence.

Computes the sum of the sequence of nullable values that are obtained by invoking a transform function on each element of the input sequence.

The sum of the projected values. A sequence of values that are used to calculate a sum. A transform function to apply to each element. The type of the elements of . or is null.

Computes the sum of the sequence of nullable values that are obtained by invoking a transform function on each element of the input sequence.

The sum of the projected values. A sequence of values that are used to calculate a sum. A transform function to apply to each element. The type of the elements of . or is null.

Computes the sum of the sequence of values that are obtained by invoking a transform function on each element of the input sequence.

The sum of the projected values. A sequence of values that are used to calculate a sum. A transform function to apply to each element. The type of the elements of . or is null.

Returns a specified number of contiguous elements from the start of a sequence.

An that contains the specified number of elements from the start of the input sequence. The sequence to return elements from. The number of elements to return. The type of the elements of . is null.

Returns elements from a sequence as long as a specified condition is true.

An that contains the elements from the input sequence that occur before the element at which the test no longer passes. A sequence to return elements from. A function to test each element for a condition. The type of the elements of . or is null.

Returns elements from a sequence as long as a specified condition is true. The element's index is used in the logic of the predicate function.

An that contains elements from the input sequence that occur before the element at which the test no longer passes. The sequence to return elements from. A function to test each source element for a condition; the second parameter of the function represents the index of the source element. The type of the elements of . or is null.

Performs a subsequent ordering of the elements in a sequence in ascending order according to a key.

An whose elements are sorted according to a key. An that contains elements to sort. A function to extract a key from each element. The type of the elements of . The type of the key returned by . or is null.

Performs a subsequent ordering of the elements in a sequence in ascending order by using a specified comparer.

An whose elements are sorted according to a key. An that contains elements to sort. A function to extract a key from each element. An to compare keys. The type of the elements of . The type of the key returned by . or is null.

Performs a subsequent ordering of the elements in a sequence in descending order, according to a key.

An whose elements are sorted in descending order according to a key. An that contains elements to sort. A function to extract a key from each element. The type of the elements of . The type of the key returned by . or is null.

Performs a subsequent ordering of the elements in a sequence in descending order by using a specified comparer.

An whose elements are sorted in descending order according to a key. An that contains elements to sort. A function to extract a key from each element. An to compare keys. The type of the elements of . The type of the key returned by . or is null.

Creates an array from a .

An array that contains the elements from the input sequence. An to create an array from. The type of the elements of . is null.

Creates a from an according to a specified key selector function.

A that contains keys and values. An to create a from. A function to extract a key from each element. The type of the elements of . The type of the key returned by . or is null.-or- produces a key that is null. produces duplicate keys for two elements.

Creates a from an according to a specified key selector function and key comparer.

A that contains keys and values. An to create a from. A function to extract a key from each element. An to compare keys. The type of the elements of . The type of the keys returned by . or is null.-or- produces a key that is null. produces duplicate keys for two elements.

Creates a from an according to specified key selector and element selector functions.

A that contains values of type selected from the input sequence. An to create a from. A function to extract a key from each element. A transform function to produce a result element value from each element. The type of the elements of . The type of the key returned by . The type of the value returned by . or or is null.-or- produces a key that is null. produces duplicate keys for two elements.

Creates a from an according to a specified key selector function, a comparer, and an element selector function.

A that contains values of type selected from the input sequence. An to create a from. A function to extract a key from each element. A transform function to produce a result element value from each element. An to compare keys. The type of the elements of . The type of the key returned by . The type of the value returned by . or or is null.-or- produces a key that is null. produces duplicate keys for two elements.

Creates a from an .

A that contains elements from the input sequence. The to create a from. The type of the elements of . is null.

Creates a from an according to a specified key selector function.

A that contains keys and values. The to create a from. A function to extract a key from each element. The type of the elements of . The type of the key returned by . or is null.

Creates a from an according to a specified key selector function and key comparer.

A that contains keys and values. The to create a from. A function to extract a key from each element. An to compare keys. The type of the elements of . The type of the key returned by . or is null.

Creates a from an according to specified key selector and element selector functions.

A that contains values of type selected from the input sequence. The to create a from. A function to extract a key from each element. A transform function to produce a result element value from each element. The type of the elements of . The type of the key returned by . The type of the value returned by . or or is null.

Creates a from an according to a specified key selector function, a comparer and an element selector function.

A that contains values of type selected from the input sequence. The to create a from. A function to extract a key from each element. A transform function to produce a result element value from each element. An to compare keys. The type of the elements of . The type of the key returned by . The type of the value returned by . or or is null.

Produces the union of two sequences by using the default equality comparer.

An that contains the elements from both input sequences, excluding duplicates. An whose distinct elements form the first set for the union. An whose distinct elements form the second set for the union. The type of the elements of the input sequences. or is null.

Produces the set union of two sequences by using a specified .

An that contains the elements from both input sequences, excluding duplicates. An whose distinct elements form the first set for the union. An whose distinct elements form the second set for the union. The to compare values. The type of the elements of the input sequences. or is null.

Filters a sequence of values based on a predicate.

An that contains elements from the input sequence that satisfy the condition. An to filter. A function to test each element for a condition. The type of the elements of . or is null.

Filters a sequence of values based on a predicate. Each element's index is used in the logic of the predicate function.

An that contains elements from the input sequence that satisfy the condition. An to filter. A function to test each source element for a condition; the second parameter of the function represents the index of the source element. The type of the elements of . or is null.

Represents a collection of objects that have a common key.

The type of the key of the . The type of the values in the . 2

Gets the key of the .

The key of the .

Defines an indexer, size property, and Boolean search method for data structures that map keys to sequences of values.

The type of the keys in the . The type of the elements in the sequences that make up the values in the . 2

Determines whether a specified key exists in the .

true if is in the ; otherwise, false. The key to search for in the .

Gets the number of key/value collection pairs in the .

The number of key/value collection pairs in the .

Gets the sequence of values indexed by a specified key.

The sequence of values indexed by the specified key. The key of the desired sequence of values.

Represents a sorted sequence.

The type of the elements of the sequence. 2

Performs a subsequent ordering on the elements of an according to a key.

An whose elements are sorted according to a key. The used to extract the key for each element. The used to compare keys for placement in the returned sequence. true to sort the elements in descending order; false to sort the elements in ascending order. The type of the key produced by . 2

Represents the result of a sorting operation.

The type of the content of the data source.

Provides functionality to evaluate queries against a specific data source wherein the type of the data is not specified.

Gets the type of the element(s) that are returned when the expression tree associated with this instance of is executed.

A that represents the type of the element(s) that are returned when the expression tree associated with this object is executed.

Gets the expression tree that is associated with the instance of .

The that is associated with this instance of .

Gets the query provider that is associated with this data source.

The that is associated with this data source.

Provides functionality to evaluate queries against a specific data source wherein the type of the data is known.

The type of the data in the data source.

Defines methods to create and execute queries that are described by an object.

Constructs an object that can evaluate the query represented by a specified expression tree.

An that can evaluate the query represented by the specified expression tree. An expression tree that represents a LINQ query. The type of the elements of the that is returned.

Constructs an object that can evaluate the query represented by a specified expression tree.

An that can evaluate the query represented by the specified expression tree. An expression tree that represents a LINQ query.

Executes the strongly-typed query represented by a specified expression tree.

The value that results from executing the specified query. An expression tree that represents a LINQ query. The type of the value that results from executing the query.

Executes the query represented by a specified expression tree.

The value that results from executing the specified query. An expression tree that represents a LINQ query.

Represents a collection of keys each mapped to one or more values.

The type of the keys in the . The type of the elements of each value in the . 2

Applies a transform function to each key and its associated values and returns the results.

A collection that contains one value for each key/value collection pair in the . A function to project a result value from each key and its associated values. The type of the result values produced by . 2

Determines whether a specified key is in the .

true if is in the ; otherwise, false. The key to find in the .

Gets the number of key/value collection pairs in the .

The number of key/value collection pairs in the .

Returns a generic enumerator that iterates through the .

An enumerator for the .

Gets the collection of values indexed by the specified key.

The collection of values indexed by the specified key. The key of the desired collection of values.

Returns an enumerator that iterates through the . This class cannot be inherited.

An enumerator for the .

Provides a set of static (Shared in Visual Basic) methods for querying data structures that implement .

Applies an accumulator function over a sequence.

The final accumulator value. A sequence to aggregate over. An accumulator function to apply to each element. The type of the elements of . or is null. contains no elements.

Applies an accumulator function over a sequence. The specified seed value is used as the initial accumulator value.

The final accumulator value. A sequence to aggregate over. The initial accumulator value. An accumulator function to invoke on each element. The type of the elements of . The type of the accumulator value. or is null.

Applies an accumulator function over a sequence. The specified seed value is used as the initial accumulator value, and the specified function is used to select the result value.

The transformed final accumulator value. A sequence to aggregate over. The initial accumulator value. An accumulator function to invoke on each element. A function to transform the final accumulator value into the result value. The type of the elements of . The type of the accumulator value. The type of the resulting value. or or is null.

Determines whether all the elements of a sequence satisfy a condition.

true if every element of the source sequence passes the test in the specified predicate, or if the sequence is empty; otherwise, false. A sequence whose elements to test for a condition. A function to test each element for a condition. The type of the elements of . or is null.

Determines whether a sequence contains any elements.

true if the source sequence contains any elements; otherwise, false. A sequence to check for being empty. The type of the elements of . is null.

Determines whether any element of a sequence satisfies a condition.

true if any elements in the source sequence pass the test in the specified predicate; otherwise, false. A sequence whose elements to test for a condition. A function to test each element for a condition. The type of the elements of . or is null.

Converts a generic to a generic .

An that represents the input sequence. A sequence to convert. The type of the elements of . is null.

Converts an to an .

An that represents the input sequence. A sequence to convert. does not implement for some . is null.

Computes the average of a sequence of values.

The average of the sequence of values. A sequence of values to calculate the average of. is null. contains no elements.

Computes the average of a sequence of values.

The average of the sequence of values. A sequence of values to calculate the average of. is null. contains no elements.

Computes the average of a sequence of values.

The average of the sequence of values. A sequence of values to calculate the average of. is null. contains no elements.

Computes the average of a sequence of values.

The average of the sequence of values. A sequence of values to calculate the average of. is null. contains no elements.

Computes the average of a sequence of nullable values.

The average of the sequence of values, or null if the source sequence is empty or contains only null values. A sequence of nullable values to calculate the average of. is null.

Computes the average of a sequence of nullable values.

The average of the sequence of values, or null if the source sequence is empty or contains only null values. A sequence of nullable values to calculate the average of. is null.

Computes the average of a sequence of nullable values.

The average of the sequence of values, or null if the source sequence is empty or contains only null values. A sequence of nullable values to calculate the average of. is null.

Computes the average of a sequence of nullable values.

The average of the sequence of values, or null if the source sequence is empty or contains only null values. A sequence of nullable values to calculate the average of. is null.

Computes the average of a sequence of nullable values.

The average of the sequence of values, or null if the source sequence is empty or contains only null values. A sequence of nullable values to calculate the average of. is null.

Computes the average of a sequence of values.

The average of the sequence of values. A sequence of values to calculate the average of. is null. contains no elements.

Computes the average of a sequence of values that is obtained by invoking a projection function on each element of the input sequence.

The average of the sequence of values. A sequence of values that are used to calculate an average. A projection function to apply to each element. The type of the elements of . or is null. contains no elements.

Computes the average of a sequence of values that is obtained by invoking a projection function on each element of the input sequence.

The average of the sequence of values. A sequence of values to calculate the average of. A projection function to apply to each element. The type of the elements of . or is null. contains no elements.

Computes the average of a sequence of values that is obtained by invoking a projection function on each element of the input sequence.

Computes the average of a sequence of nullable values that is obtained by invoking a projection function on each element of the input sequence.

The average of the sequence of values, or null if the sequence is empty or contains only null values. A sequence of values to calculate the average of. A projection function to apply to each element. The type of the elements of . or is null.

Computes the average of a sequence of nullable values that is obtained by invoking a projection function on each element of the input sequence.

Computes the average of a sequence of values that is obtained by invoking a projection function on each element of the input sequence.

Converts the elements of an to the specified type.

Concatenates two sequences.

Determines whether a sequence contains a specified element by using the default equality comparer.

true if the input sequence contains an element that has the specified value; otherwise, false. An in which to locate . The object to locate in the sequence. The type of the elements of . is null.

Determines whether a sequence contains a specified element by using a specified .

true if the input sequence contains an element that has the specified value; otherwise, false. An in which to locate . The object to locate in the sequence. An to compare values. The type of the elements of . is null.

Returns the number of elements in a sequence.

The number of elements in the input sequence. The that contains the elements to be counted. The type of the elements of . is null. The number of elements in is larger than .

Returns the number of elements in the specified sequence that satisfies a condition.

The number of elements in the sequence that satisfies the condition in the predicate function. An that contains the elements to be counted. A function to test each element for a condition. The type of the elements of . or is null. The number of elements in is larger than .

Returns the elements of the specified sequence or the type parameter's default value in a singleton collection if the sequence is empty.

An that contains default() if is empty; otherwise, . The to return a default value for if empty. The type of the elements of . is null.

Returns the elements of the specified sequence or the specified value in a singleton collection if the sequence is empty.

An that contains if is empty; otherwise, . The to return the specified value for if empty. The value to return if the sequence is empty. The type of the elements of . is null.

Returns distinct elements from a sequence by using the default equality comparer to compare values.

An that contains distinct elements from . The to remove duplicates from. The type of the elements of . is null.

Returns distinct elements from a sequence by using a specified to compare values.

An that contains distinct elements from . The to remove duplicates from. An to compare values. The type of the elements of . or is null.

Returns the element at a specified index in a sequence.

The element at the specified position in . An to return an element from. The zero-based index of the element to retrieve. The type of the elements of . is null. is less than zero.

Returns the element at a specified index in a sequence or a default value if the index is out of range.

default() if is outside the bounds of ; otherwise, the element at the specified position in . An to return an element from. The zero-based index of the element to retrieve. The type of the elements of . is null.

Produces the set difference of two sequences by using the default equality comparer to compare values.

An that contains the set difference of the two sequences. An whose elements that are not also in will be returned. An whose elements that also occur in the first sequence will not appear in the returned sequence. The type of the elements of the input sequences. or is null.

Produces the set difference of two sequences by using the specified to compare values.

An that contains the set difference of the two sequences. An whose elements that are not also in will be returned. An whose elements that also occur in the first sequence will not appear in the returned sequence. An to compare values. The type of the elements of the input sequences. or is null.

Returns the first element of a sequence.

The first element in . The to return the first element of. The type of the elements of . is null. The source sequence is empty.

Returns the first element of a sequence that satisfies a specified condition.

The first element in that passes the test in . An to return an element from. A function to test each element for a condition. The type of the elements of . or is null. No element satisfies the condition in .-or-The source sequence is empty.

Returns the first element of a sequence, or a default value if the sequence contains no elements.

default() if is empty; otherwise, the first element in . The to return the first element of. The type of the elements of . is null.

Returns the first element of a sequence that satisfies a specified condition or a default value if no such element is found.

Groups the elements of a sequence according to a specified key selector function.

An IQueryable<IGrouping<TKey, TSource>> in C# or IQueryable(Of IGrouping(Of TKey, TSource)) in Visual Basic where each object contains a sequence of objects and a key. An whose elements to group. A function to extract the key for each element. The type of the elements of . The type of the key returned by the function represented in . or is null.

Groups the elements of a sequence according to a specified key selector function and compares the keys by using a specified comparer.

An IQueryable<IGrouping<TKey, TSource>> in C# or IQueryable(Of IGrouping(Of TKey, TSource)) in Visual Basic where each contains a sequence of objects and a key. An whose elements to group. A function to extract the key for each element. An to compare keys. The type of the elements of . The type of the key returned by the function represented in . or or is null.

Groups the elements of a sequence according to a specified key selector function and projects the elements for each group by using a specified function.

An IQueryable<IGrouping<TKey, TElement>> in C# or IQueryable(Of IGrouping(Of TKey, TElement)) in Visual Basic where each contains a sequence of objects of type and a key. An whose elements to group. A function to extract the key for each element. A function to map each source element to an element in an . The type of the elements of . The type of the key returned by the function represented in . The type of the elements in each . or or is null.

Groups the elements of a sequence and projects the elements for each group by using a specified function. Key values are compared by using a specified comparer.

An IQueryable<IGrouping<TKey, TElement>> in C# or IQueryable(Of IGrouping(Of TKey, TElement)) in Visual Basic where each contains a sequence of objects of type and a key. An whose elements to group. A function to extract the key for each element. A function to map each source element to an element in an . An to compare keys. The type of the elements of . The type of the key returned by the function represented in . The type of the elements in each . or or or is null.

An T:System.Linq.IQueryable`1 that has a type argument of and where each element represents a projection over a group and its key. An whose elements to group. A function to extract the key for each element. A function to map each source element to an element in an . A function to create a result value from each group. The type of the elements of . The type of the key returned by the function represented in . The type of the elements in each . The type of the result value returned by . or or or is null.

Groups the elements of a sequence according to a specified key selector function and creates a result value from each group and its key. Keys are compared by using a specified comparer and the elements of each group are projected by using a specified function.

An T:System.Linq.IQueryable`1 that has a type argument of and where each element represents a projection over a group and its key. An whose elements to group. A function to extract the key for each element. A function to map each source element to an element in an . A function to create a result value from each group. An to compare keys. The type of the elements of . The type of the key returned by the function represented in . The type of the elements in each . The type of the result value returned by . or or or or is null.

Groups the elements of a sequence according to a specified key selector function and creates a result value from each group and its key.

An T:System.Linq.IQueryable`1 that has a type argument of and where each element represents a projection over a group and its key. An whose elements to group. A function to extract the key for each element. A function to create a result value from each group. The type of the elements of . The type of the key returned by the function represented in . The type of the result value returned by . or or is null.

Groups the elements of a sequence according to a specified key selector function and creates a result value from each group and its key. Keys are compared by using a specified comparer.

An T:System.Linq.IQueryable`1 that has a type argument of and where each element represents a projection over a group and its key. An whose elements to group. A function to extract the key for each element. A function to create a result value from each group. An to compare keys. The type of the elements of . The type of the key returned by the function represented in . The type of the result value returned by . or or or is null.

Correlates the elements of two sequences based on key equality and groups the results. The default equality comparer is used to compare keys.

An that contains elements of type obtained by performing a grouped join on two sequences. The first sequence to join. The sequence to join to the first sequence. A function to extract the join key from each element of the first sequence. A function to extract the join key from each element of the second sequence. A function to create a result element from an element from the first sequence and a collection of matching elements from the second sequence. The type of the elements of the first sequence. The type of the elements of the second sequence. The type of the keys returned by the key selector functions. The type of the result elements. or or or or is null.

Correlates the elements of two sequences based on key equality and groups the results. A specified is used to compare keys.

An that contains elements of type obtained by performing a grouped join on two sequences. The first sequence to join. The sequence to join to the first sequence. A function to extract the join key from each element of the first sequence. A function to extract the join key from each element of the second sequence. A function to create a result element from an element from the first sequence and a collection of matching elements from the second sequence. A comparer to hash and compare keys. The type of the elements of the first sequence. The type of the elements of the second sequence. The type of the keys returned by the key selector functions. The type of the result elements. or or or or is null.

Produces the set intersection of two sequences by using the default equality comparer to compare values.

A sequence that contains the set intersection of the two sequences. A sequence whose distinct elements that also appear in are returned. A sequence whose distinct elements that also appear in the first sequence are returned. The type of the elements of the input sequences. or is null.

Produces the set intersection of two sequences by using the specified to compare values.

An that contains the set intersection of the two sequences. An whose distinct elements that also appear in are returned. An whose distinct elements that also appear in the first sequence are returned. An to compare values. The type of the elements of the input sequences. or is null.

Correlates the elements of two sequences based on matching keys. The default equality comparer is used to compare keys.

An that has elements of type obtained by performing an inner join on two sequences. The first sequence to join. The sequence to join to the first sequence. A function to extract the join key from each element of the first sequence. A function to extract the join key from each element of the second sequence. A function to create a result element from two matching elements. The type of the elements of the first sequence. The type of the elements of the second sequence. The type of the keys returned by the key selector functions. The type of the result elements. or or or or is null.

Correlates the elements of two sequences based on matching keys. A specified is used to compare keys.

An that has elements of type obtained by performing an inner join on two sequences. The first sequence to join. The sequence to join to the first sequence. A function to extract the join key from each element of the first sequence. A function to extract the join key from each element of the second sequence. A function to create a result element from two matching elements. An to hash and compare keys. The type of the elements of the first sequence. The type of the elements of the second sequence. The type of the keys returned by the key selector functions. The type of the result elements. or or or or is null.

Returns the last element in a sequence.

The value at the last position in . An to return the last element of. The type of the elements of . is null. The source sequence is empty.

Returns the last element of a sequence that satisfies a specified condition.

The last element in that passes the test specified by . An to return an element from. A function to test each element for a condition. The type of the elements of . or is null. No element satisfies the condition in .-or-The source sequence is empty.

Returns the last element in a sequence, or a default value if the sequence contains no elements.

default() if is empty; otherwise, the last element in . An to return the last element of. The type of the elements of . is null.

Returns the last element of a sequence that satisfies a condition or a default value if no such element is found.

default() if is empty or if no elements pass the test in the predicate function; otherwise, the last element of that passes the test in the predicate function. An to return an element from. A function to test each element for a condition. The type of the elements of . or is null.

Returns an that represents the total number of elements in a sequence.

The number of elements in . An that contains the elements to be counted. The type of the elements of . is null. The number of elements exceeds .

Returns an that represents the number of elements in a sequence that satisfy a condition.

The number of elements in that satisfy the condition in the predicate function. An that contains the elements to be counted. A function to test each element for a condition. The type of the elements of . or is null. The number of matching elements exceeds .

Returns the maximum value in a generic .

The maximum value in the sequence. A sequence of values to determine the maximum of. The type of the elements of . is null.

Invokes a projection function on each element of a generic and returns the maximum resulting value.

The maximum value in the sequence. A sequence of values to determine the maximum of. A projection function to apply to each element. The type of the elements of . The type of the value returned by the function represented by . or is null.

Returns the minimum value of a generic .

The minimum value in the sequence. A sequence of values to determine the minimum of. The type of the elements of . is null.

Invokes a projection function on each element of a generic and returns the minimum resulting value.

The minimum value in the sequence. A sequence of values to determine the minimum of. A projection function to apply to each element. The type of the elements of . The type of the value returned by the function represented by . or is null.

Filters the elements of an based on a specified type.

A collection that contains the elements from that have type . An whose elements to filter. The type to filter the elements of the sequence on. is null.

Sorts the elements of a sequence in ascending order according to a key.

An whose elements are sorted according to a key. A sequence of values to order. A function to extract a key from an element. The type of the elements of . The type of the key returned by the function that is represented by . or is null.

Sorts the elements of a sequence in ascending order by using a specified comparer.

Sorts the elements of a sequence in descending order according to a key.

Sorts the elements of a sequence in descending order by using a specified comparer.

Inverts the order of the elements in a sequence.

An whose elements correspond to those of the input sequence in reverse order. A sequence of values to reverse. The type of the elements of . is null.

Projects each element of a sequence into a new form.

An whose elements are the result of invoking a projection function on each element of . A sequence of values to project. A projection function to apply to each element. The type of the elements of . The type of the value returned by the function represented by . or is null.

Projects each element of a sequence into a new form by incorporating the element's index.

Projects each element of a sequence to an and invokes a result selector function on each element therein. The resulting values from each intermediate sequence are combined into a single, one-dimensional sequence and returned.

An whose elements are the result of invoking the one-to-many projection function on each element of and then mapping each of those sequence elements and their corresponding element to a result element. A sequence of values to project. A projection function to apply to each element of the input sequence. A projection function to apply to each element of each intermediate sequence. The type of the elements of . The type of the intermediate elements collected by the function represented by . The type of the elements of the resulting sequence. or or is null.

Projects each element of a sequence to an and combines the resulting sequences into one sequence.

An whose elements are the result of invoking a one-to-many projection function on each element of the input sequence. A sequence of values to project. A projection function to apply to each element. The type of the elements of . The type of the elements of the sequence returned by the function represented by . or is null.

Projects each element of a sequence to an that incorporates the index of the source element that produced it. A result selector function is invoked on each element of each intermediate sequence, and the resulting values are combined into a single, one-dimensional sequence and returned.

An whose elements are the result of invoking the one-to-many projection function on each element of and then mapping each of those sequence elements and their corresponding element to a result element. A sequence of values to project. A projection function to apply to each element of the input sequence; the second parameter of this function represents the index of the source element. A projection function to apply to each element of each intermediate sequence. The type of the elements of . The type of the intermediate elements collected by the function represented by . The type of the elements of the resulting sequence. or or is null.

Projects each element of a sequence to an and combines the resulting sequences into one sequence. The index of each source element is used in the projected form of that element.

An whose elements are the result of invoking a one-to-many projection function on each element of the input sequence. A sequence of values to project. A projection function to apply to each element; the second parameter of this function represents the index of the source element. The type of the elements of . The type of the elements of the sequence returned by the function represented by . or is null.

Determines whether two sequences are equal by using the default equality comparer to compare elements.

true if the two source sequences are of equal length and their corresponding elements compare equal; otherwise, false. An whose elements to compare to those of . An whose elements to compare to those of the first sequence. The type of the elements of the input sequences. or is null.

Determines whether two sequences are equal by using a specified to compare elements.

true if the two source sequences are of equal length and their corresponding elements compare equal; otherwise, false. An whose elements to compare to those of . An whose elements to compare to those of the first sequence. An to use to compare elements. The type of the elements of the input sequences. or is null.

Returns the only element of a sequence, and throws an exception if there is not exactly one element in the sequence.

The single element of the input sequence. An to return the single element of. The type of the elements of . is null. has more than one element.

Returns the only element of a sequence that satisfies a specified condition, and throws an exception if more than one such element exists.

The single element of the input sequence that satisfies the condition in . An to return a single element from. A function to test an element for a condition. The type of the elements of . or is null. No element satisfies the condition in .-or-More than one element satisfies the condition in .-or-The source sequence is empty.

Returns the only element of a sequence, or a default value if the sequence is empty; this method throws an exception if there is more than one element in the sequence.

The single element of the input sequence, or default() if the sequence contains no elements. An to return the single element of. The type of the elements of . is null.

The single element of the input sequence that satisfies the condition in , or default() if no such element is found. An to return a single element from. A function to test an element for a condition. The type of the elements of . or is null.

Bypasses a specified number of elements in a sequence and then returns the remaining elements.

An that contains elements that occur after the specified index in the input sequence. An to return elements from. The number of elements to skip before returning the remaining elements. The type of the elements of . is null.

Bypasses elements in a sequence as long as a specified condition is true and then returns the remaining elements.

An that contains elements from starting at the first element in the linear series that does not pass the test specified by . An to return elements from. A function to test each element for a condition. The type of the elements of . or is null.

Bypasses elements in a sequence as long as a specified condition is true and then returns the remaining elements. The element's index is used in the logic of the predicate function.

Computes the sum of a sequence of values.

The sum of the values in the sequence. A sequence of values to calculate the sum of. is null. The sum is larger than .

Computes the sum of a sequence of values.

The sum of the values in the sequence. A sequence of values to calculate the sum of. is null.

Computes the sum of a sequence of values.

The sum of the values in the sequence. A sequence of values to calculate the sum of. is null. The sum is larger than .

Computes the sum of a sequence of values.

The sum of the values in the sequence. A sequence of values to calculate the sum of. is null. The sum is larger than .

Computes the sum of a sequence of nullable values.

The sum of the values in the sequence. A sequence of nullable values to calculate the sum of. is null. The sum is larger than .

Computes the sum of a sequence of nullable values.

The sum of the values in the sequence. A sequence of nullable values to calculate the sum of. is null.

Computes the sum of a sequence of nullable values.

The sum of the values in the sequence. A sequence of nullable values to calculate the sum of. is null. The sum is larger than .

Computes the sum of a sequence of nullable values.

The sum of the values in the sequence. A sequence of nullable values to calculate the sum of. is null. The sum is larger than .

Computes the sum of a sequence of nullable values.

The sum of the values in the sequence. A sequence of nullable values to calculate the sum of. is null.

Computes the sum of a sequence of values.

The sum of the values in the sequence. A sequence of values to calculate the sum of. is null.

Computes the sum of the sequence of values that is obtained by invoking a projection function on each element of the input sequence.

The sum of the projected values. A sequence of values of type . A projection function to apply to each element. The type of the elements of . or is null. The sum is larger than .

Computes the sum of the sequence of values that is obtained by invoking a projection function on each element of the input sequence.

The sum of the projected values. A sequence of values of type . A projection function to apply to each element. The type of the elements of . or is null.

Computes the sum of the sequence of values that is obtained by invoking a projection function on each element of the input sequence.

The sum of the projected values. A sequence of values of type . A projection function to apply to each element. The type of the elements of . or is null. The sum is larger than .

Computes the sum of the sequence of values that is obtained by invoking a projection function on each element of the input sequence.

The sum of the projected values. A sequence of values of type . A projection function to apply to each element. The type of the elements of . or is null. The sum is larger than .

Computes the sum of the sequence of nullable values that is obtained by invoking a projection function on each element of the input sequence.