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ParallelEnumerable.LongCount Method

  • Reference

Definition

Namespace:
System.Linq
Assembly:
System.Linq.Parallel.dll
Assembly:
System.Core.dll
Assembly:
netstandard.dll

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

Overloads

LongCount<TSource>(ParallelQuery<TSource>)

Returns an Int64 that represents the total number of elements in a parallel sequence.
LongCount<TSource>(ParallelQuery<TSource>, Func<TSource,Boolean>)

Returns an Int64 that represents how many elements in a parallel sequence satisfy a condition.

LongCount<TSource>(ParallelQuery<TSource>)

Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs

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

public:
generic <typename TSource>
[System::Runtime::CompilerServices::Extension]
 static long LongCount(System::Linq::ParallelQuery<TSource> ^ source);
public static long LongCount<TSource> (this System.Linq.ParallelQuery<TSource> source);
static member LongCount : System.Linq.ParallelQuery<'Source> -> int64
<Extension()>
Public Function LongCount(Of TSource) (source As ParallelQuery(Of TSource)) As Long

Type Parameters

TSource

The type of the elements of source.

Parameters

source
ParallelQuery<TSource>

A sequence that contains elements to be counted.

Returns

Int64

The number of elements in the input sequence.

Exceptions

OperationCanceledException

The query was canceled with the token passed in through WithCancellation<TSource>(ParallelQuery<TSource>, CancellationToken).

ArgumentNullException

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

AggregateException

The number of elements in source is larger than Int32.MaxValue. -or- One or more exceptions occurred during the evaluation of the query.

OverflowException

The computed result is greater than Int32.MaxValue.

See also

Applies to

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

Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs

Returns an Int64 that represents how many elements in a parallel sequence satisfy a condition.

public:
generic <typename TSource>
[System::Runtime::CompilerServices::Extension]
 static long LongCount(System::Linq::ParallelQuery<TSource> ^ source, Func<TSource, bool> ^ predicate);
public static long LongCount<TSource> (this System.Linq.ParallelQuery<TSource> source, Func<TSource,bool> predicate);
static member LongCount : System.Linq.ParallelQuery<'Source> * Func<'Source, bool> -> int64
<Extension()>
Public Function LongCount(Of TSource) (source As ParallelQuery(Of TSource), predicate As Func(Of TSource, Boolean)) As Long

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

Int64

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

Exceptions

OperationCanceledException

The query was canceled with the token passed in through WithCancellation<TSource>(ParallelQuery<TSource>, CancellationToken).

ArgumentNullException

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

AggregateException

The number of elements in source is larger than Int32.MaxValue. -or- One or more exceptions occurred during the evaluation of the query.

OverflowException

The computed result is greater than Int32.MaxValue.

See also

Applies to