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ParallelEnumerable::Except<TSource> Method (ParallelQuery<TSource>, ParallelQuery<TSource>, IEqualityComparer<TSource>)

Produces the set difference of two parallel sequences by using the specified IEqualityComparer<T> to compare values.

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

[ExtensionAttribute]
public:
generic<typename TSource>
static ParallelQuery<TSource>^ Except(
	ParallelQuery<TSource>^ first, 
	ParallelQuery<TSource>^ second, 
	IEqualityComparer<TSource>^ comparer
)

Type Parameters

TSource

The type of the elements of the input sequences.

Parameters

first
Type: System.Linq::ParallelQuery<TSource>

A sequence whose elements that are not also in second will be returned.

second
Type: System.Linq::ParallelQuery<TSource>

A sequence whose elements that also occur in the first sequence will cause those elements to be removed from the returned sequence.

comparer
Type: System.Collections.Generic::IEqualityComparer<TSource>

IEqualityComparer<T> to compare values.

Return Value

Type: System.Linq::ParallelQuery<TSource>
A sequence that contains the set difference of the elements of two sequences.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type ParallelQuery<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

first or second 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.

.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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