ParallelEnumerable.Count Method

Definition

Returns the number of elements in a parallel sequence.

Overloads

Count<TSource>(ParallelQuery<TSource>)

Returns the number of elements in a parallel sequence.

Count<TSource>(ParallelQuery<TSource>, Func<TSource,Boolean>)

Returns a number that represents how many elements in the specified parallel sequence satisfy a condition.

Count<TSource>(ParallelQuery<TSource>)

Returns the number of elements in a parallel sequence.

public:
generic <typename TSource>
[System::Runtime::CompilerServices::Extension]
 static int Count(System::Linq::ParallelQuery<TSource> ^ source);
public static int Count<TSource> (this System.Linq.ParallelQuery<TSource> source);
static member Count : System.Linq.ParallelQuery<'Source> -> int
<Extension()>
Public Function Count(Of TSource) (source As ParallelQuery(Of TSource)) As Integer

Type Parameters

TSource

The type of the elements of source.

Parameters

source
ParallelQuery<TSource>

A sequence that contains elements to be counted.

Returns

The number of elements in the input sequence.

Exceptions

The query was canceled with the token passed in through WithCancellation.

source is a null reference (Nothing in Visual Basic).

The number of elements in source is larger than MaxValue. (In this case the InnerException is OverflowException) -or- One or more exceptions occurred during the evaluation of the query.

See also

Count<TSource>(ParallelQuery<TSource>, Func<TSource,Boolean>)

Returns a number that represents how many elements in the specified parallel sequence satisfy a condition.

public:
generic <typename TSource>
[System::Runtime::CompilerServices::Extension]
 static int Count(System::Linq::ParallelQuery<TSource> ^ source, Func<TSource, bool> ^ predicate);
public static int Count<TSource> (this System.Linq.ParallelQuery<TSource> source, Func<TSource,bool> predicate);
static member Count : System.Linq.ParallelQuery<'Source> * Func<'Source, bool> -> int
<Extension()>
Public Function Count(Of TSource) (source As ParallelQuery(Of TSource), predicate As Func(Of TSource, Boolean)) As Integer

Type Parameters

TSource

The type of the elements of source.

Parameters

source
ParallelQuery<TSource>

A sequence that contains elements to be counted.

predicate
Func<TSource,Boolean>

A function to test each element for a condition.

Returns

A number that represents how many elements in the sequence satisfy the condition in the predicate function.

Exceptions

The query was canceled with the token passed in through WithCancellation.

source or predicate is a null reference (Nothing in Visual Basic).

The number of elements in source is larger than MaxValue. (In this case the InnerException is OverflowException) -or- One or more exceptions occurred during the evaluation of the query.

See also

Applies to