ISet<T>.IsSubsetOf Method

Determines whether a set is a subset of a specified collection.

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

bool IsSubsetOf(
	IEnumerable<T> other
)

Parameters

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

The collection to compare to the current set.

Return Value

Type: System.Boolean
true if the current set is a subset of other; otherwise, false.

ExceptionCondition
ArgumentNullException

other is null.

If other contains the same elements as the current set, the current set is still considered a subset of other.

This method always returns false if the current set has elements that are not in other.

.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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