ParallelEnumerable.Contains(Of TSource) Method (ParallelQuery(Of TSource), TSource, IEqualityComparer(Of TSource))

.NET Framework (current version)
 

Determines in parallel whether a sequence contains a specified element by using a specified IEqualityComparer(Of T).

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

<ExtensionAttribute>
Public Shared Function Contains(Of TSource) (
	source As ParallelQuery(Of TSource),
	value As TSource,
	comparer As IEqualityComparer(Of TSource)
) As Boolean

Parameters

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

A sequence in which to locate a value.

value
Type: TSource

The value to locate in the sequence.

comparer
Type: System.Collections.Generic.IEqualityComparer(Of TSource)

An equality comparer to compare values.

Return Value

Type: System.Boolean

true if the source sequence contains an element that has the specified value; otherwise, false.

Type Parameters

TSource

The type of elements of source.

Exception Condition
OperationCanceledException

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

ArgumentNullException

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

AggregateException

One or more exceptions occurred during the evaluation of 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
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