HashSet<T>.UnionWith Method

Modifies the current HashSet<T> object to contain all elements that are present in both itself and in the specified collection.

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

public void UnionWith(
	IEnumerable<T> other
)

Parameters

other
Type: System.Collections.Generic.IEnumerable<T>
The collection to compare to the current HashSet<T> object.

Implements

ISet<T>.UnionWith(IEnumerable<T>)

ExceptionCondition
ArgumentNullException

other is null.

This method is an O(n) operation, where n is the number of elements in the other parameter.

Silverlight

Supported in: 5, 4

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

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