ISet<T>.UnionWith Method

Modifies the current set so that it contains all elements that are present in the current set, in the specified collection, or in both.

Namespace:  System.Collections.Generic
Assembly:  System (in System.dll)

void UnionWith(
	IEnumerable<T> other


Type: System.Collections.Generic.IEnumerable<T>

The collection to compare to the current set.


other is null.

Any duplicate elements in other are ignored.

.NET Framework

Supported in: 4.6, 4.5, 4

.NET Framework Client Profile

Supported in: 4

.NET for Windows Phone apps

Supported in: Windows Phone 8.1, Windows Phone Silverlight 8.1, Windows Phone Silverlight 8

Portable Class Library

Supported in: Portable Class Library
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