ParallelEnumerable.ForAll<TSource> Method

Reference

Definition

Namespace:: System.Linq

Assembly:: System.Linq.Parallel.dll

Assembly:: System.Core.dll

Assembly:: netstandard.dll

Source:: ParallelEnumerable.cs

Source:: ParallelEnumerable.cs

Source:: ParallelEnumerable.cs

Important

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Invokes in parallel the specified action for each element in the source.

public:
generic <typename TSource>
[System::Runtime::CompilerServices::Extension]
 static void ForAll(System::Linq::ParallelQuery<TSource> ^ source, Action<TSource> ^ action);

public static void ForAll<TSource> (this System.Linq.ParallelQuery<TSource> source, Action<TSource> action);

static member ForAll : System.Linq.ParallelQuery<'Source> * Action<'Source> -> unit

<Extension()>
Public Sub ForAll(Of TSource) (source As ParallelQuery(Of TSource), action As Action(Of TSource))

Type Parameters

TSource

The type of elements of source.

Parameters

source: ParallelQuery<TSource>

The ParallelQuery<TSource> whose elements will be processed by action.

action: Action<TSource>

An Action to invoke on each element.

Exceptions

OperationCanceledException

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

ArgumentNullException

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

AggregateException

One or more exceptions occurred during the evaluation of the query.

Remarks

This is an efficient way to process the output from a parallelized query because it does not require a merge step at the end. For more information, see Merge Options in PLINQ or Order Preservation in PLINQ. Because this method produces a side-effect, it can be used to observe the actual order of execution in a parallel query.

Applies to

Jaa