ParallelEnumerable.ForAll<TSource> Method
Definition
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
The query was canceled with the token passed in through WithCancellation<TSource>(ParallelQuery<TSource>, CancellationToken).
source or action is a null reference (Nothing in Visual Basic).
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.
