LongCount(TSource) Method (ParallelQuery(TSource))

Task Parallel System.Threading

Returns an Int64 that represents the total number of elements in a parallel sequence.

Namespace:  System.Linq
Assembly:  System.Threading (in System.Threading.dll)

Syntax

Visual Basic (Declaration)
Public Shared Function LongCount(Of TSource) ( _
	source As ParallelQuery(Of TSource) _
) As Long
C#
public static long LongCount<TSource>(
	ParallelQuery<TSource> source
)

Parameters

source
Type: System.Linq..::.ParallelQuery<(Of <(TSource>)>)
A sequence that contains elements to be counted.

Type Parameters

TSource
The type of the elements of source.

Return Value

The number of elements in the input sequence.

Exceptions

ExceptionCondition
System..::.ArgumentNullException source is a null reference (Nothing in Visual Basic).
System..::.AggregateException The number of elements in source is larger than MaxValue()()(). -or- One or more exceptions occurred during the evaluation of the query.
System..::.OperationCanceledException The query was canceled.

See Also