ForEach(TSource) Method (IEnumerable(TSource), Action(TSource))

Executes a for each operation on an IEnumerable<(Of <(TSource>)>) in which iterations may run in parallel.

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

Syntax

Visual Basic (Declaration)
Public Shared Function ForEach(Of TSource) ( _ source As IEnumerable(Of TSource), _ body As Action(Of TSource) _ ) As ParallelLoopResult

C#
public static ParallelLoopResult ForEach<TSource>( IEnumerable<TSource> source, Action<TSource> body )

source: Type: System.Collections.Generic..::.IEnumerable<(Of <(TSource>)>)
An enumerable data source.

body: Type: System..::.Action<(Of <(TSource>)>)
The delegate that is invoked once per iteration.

A ParallelLoopResult structure that contains information on what portion of the loop completed.

The body delegate is invoked once for each element in the source enumerable. It is provided with the current element as a parameter.

Exception	Condition
System..::.ArgumentNullException	The exception that is thrown when the source argument is null.
System..::.ArgumentNullException	The exception that is thrown when the body argument is null.
System..::.AggregateException	The exception that is thrown to contain an exception thrown from one of the specified delegates.