ParallelEnumerable.Union(Of TSource) Method (ParallelQuery(Of TSource), ParallelQuery(Of TSource), IEqualityComparer(Of 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)
<ExtensionAttribute> Public Shared Function Union(Of TSource) ( first As ParallelQuery(Of TSource), second As ParallelQuery(Of TSource), comparer As IEqualityComparer(Of TSource) ) As ParallelQuery(Of TSource)
Parameters
- first
-
Type:
System.Linq.ParallelQuery(Of TSource)
A sequence whose distinct elements form the first set for the union.
- second
-
Type:
System.Linq.ParallelQuery(Of TSource)
A sequence whose distinct elements form the second set for the union.
- comparer
-
Type:
System.Collections.Generic.IEqualityComparer(Of TSource)
An IEqualityComparer(Of T) to compare values.
Return Value
Type: System.Linq.ParallelQuery(Of 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
Show: