Select(TSource, TResult) Method (ParallelQuery(TSource), Func(TSource, TResult))

ParallelEnumerable.Select(Of TSource, TResult) Method (ParallelQuery(Of TSource), Func(Of TSource, TResult))

 

Projects in parallel each element of a sequence into a new form.

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

<ExtensionAttribute>
Public Shared Function Select(Of TSource, TResult) (
	source As ParallelQuery(Of TSource),
	selector As Func(Of TSource, TResult)
) As ParallelQuery(Of TResult)

Parameters

source
Type: System.Linq.ParallelQuery(Of TSource)

A sequence of values to invoke a transform function on.

selector
Type: System.Func(Of TSource, TResult)

A transform function to apply to each element.

Return Value

Type: System.Linq.ParallelQuery(Of TResult)

A sequence whose elements are the result of invoking the transform function on each element of source.

Type Parameters

TSource

The type of the elements of source.

TResult

The type of elements resturned by selector.

Exception Condition
ArgumentNullException

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

OperationCanceledException

The query was canceled with the token passed in through WithCancellation.

AggregateException

One or more exceptions occurred during the evaluation of the query.

Universal Windows Platform
Available since 4.5
.NET Framework
Available since 4.0
Portable Class Library
Supported in: portable .NET platforms
Windows Phone
Available since 8.1
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