Windows apps
Collapse the table of content
Expand the table of content
The topic you requested is included in another documentation set. For convenience, it's displayed below. Choose Switch to see the topic in its original location.

ParallelEnumerable.AsParallel(Of TSource) Method (IEnumerable(Of TSource))

.NET Framework (current version)

Enables parallelization of a query.

Namespace:   System.Linq
Assembly:  System.Core (in System.Core.dll)

Public Shared Function AsParallel(Of TSource) (
	source As IEnumerable(Of TSource)
) As ParallelQuery(Of TSource)


Type: System.Collections.Generic.IEnumerable(Of TSource)

An IEnumerable(Of T) to convert to a ParallelQuery(Of TSource).

Return Value

Type: System.Linq.ParallelQuery(Of TSource)

The source as a ParallelQuery(Of TSource) to bind to ParallelEnumerable extension methods.

Type Parameters


The type of elements of source.

Exception Condition

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

Universal Windows Platform
Available since 8
.NET Framework
Available since 4.0
Portable Class Library
Supported in: portable .NET platforms
Windows Phone
Available since 8.1
Return to top
© 2017 Microsoft