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ParallelEnumerable.AsParallel<TSource> Method (Partitioner<TSource>)

Enables parallelization of a query, as sourced by a custom partitioner that is responsible for splitting the input sequence into partitions.

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

public static ParallelQuery<TSource> AsParallel<TSource>(
	this Partitioner<TSource> source
)

Type Parameters

TSource

The type of elements of source.

Parameters

source
Type: System.Collections.Concurrent.Partitioner<TSource>

A partitioner over the input sequence.

Return Value

Type: System.Linq.ParallelQuery<TSource>
The source as a ParallelQuery to bind to ParallelEnumerable extension methods.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type Partitioner<TSource>. When you use instance method syntax to call this method, omit the first parameter. For more information, see Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).

ExceptionCondition
ArgumentNullException

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

The source partitioner's GetOrderedPartitions method is used when ordering is enabled, whereas the partitioner's GetPartitions is used if ordering is not enabled (the default). The source partitioner's GetDynamicPartitions and GetDynamicOrderedPartitions are not used. For more information and examples, see Custom Partitioners for PLINQ and TPL.

.NET Framework

Supported in: 4.5, 4

.NET Framework Client Profile

Supported in: 4

Portable Class Library

Supported in: Portable Class Library

.NET for Windows Store apps

Supported in: Windows 8

.NET for Windows Phone apps

Supported in: Windows Phone 8.1

Windows Phone 8.1, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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