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ParallelEnumerable::Union<TSource> Method (ParallelQuery<TSource>^, ParallelQuery<TSource>^, IEqualityComparer<TSource>^)
.NET Framework (current version)
Produces the set union of two parallel sequences by using a specified IEqualityComparer{T}.
Assembly: System.Core (in System.Core.dll)
public: generic<typename TSource> [ExtensionAttribute] static ParallelQuery<TSource>^ Union( ParallelQuery<TSource>^ first, ParallelQuery<TSource>^ second, IEqualityComparer<TSource>^ comparer )
Parameters
- first
-
Type:
System.Linq::ParallelQuery<TSource>^
A sequence whose distinct elements form the first set for the union.
- second
-
Type:
System.Linq::ParallelQuery<TSource>^
A sequence whose distinct elements form the second set for the union.
- comparer
-
Type:
System.Collections.Generic::IEqualityComparer<TSource>^
An IEqualityComparer<T> to compare values.
Return Value
Type: System.Linq::ParallelQuery<TSource>^A sequence that contains the elements from both input sequences, excluding duplicates.
Type Parameters
- TSource
The type of the elements of the input sequences.
| Exception | Condition |
|---|---|
| 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. |
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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