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ParallelEnumerable::WithDegreeOfParallelism<TSource> Method (ParallelQuery<TSource>^, Int32)
.NET Framework (current version)
Sets the degree of parallelism to use in a query. Degree of parallelism is the maximum number of concurrently executing tasks that will be used to process the query.
Assembly: System.Core (in System.Core.dll)
public: generic<typename TSource> [ExtensionAttribute] static ParallelQuery<TSource>^ WithDegreeOfParallelism( ParallelQuery<TSource>^ source, int degreeOfParallelism )
Parameters
- source
-
Type:
System.Linq::ParallelQuery<TSource>^
A ParallelQuery on which to set the limit on the degrees of parallelism.
- degreeOfParallelism
-
Type:
System::Int32
The degree of parallelism for the query. The default value is Math.Min(ProcessorCount, MAX_SUPPORTED_DOP) where MAX_SUPPORTED_DOP is 512.
Return Value
Type: System.Linq::ParallelQuery<TSource>^ParallelQuery representing the same query as source, with the limit on the degrees of parallelism set.
Type Parameters
- TSource
The type of elements of source.
| Exception | Condition |
|---|---|
| ArgumentNullException | source is a null reference (Nothing in Visual Basic). |
| ArgumentOutOfRangeException | degreeOfParallelism is less than 1 or greater than 511. |
| InvalidOperationException | WithDegreeOfParallelism is used multiple times in the query. |
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
Available since 8
.NET Framework
Available since 4.0
Portable Class Library
Supported in: portable .NET platforms
Windows Phone
Available since 8.1
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