ICollection(TValue).Contains Method

SortedDictionary(Of TKey, TValue).ValueCollection.ICollection(Of TValue).Contains Method

[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]

Determines whether the ICollection(Of T) contains a specified value.

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

'Declaration
Private Function Contains ( _
	item As TValue _
) As Boolean Implements ICollection(Of TValue).Contains

Parameters

item
Type: TValue
The object to locate in the ICollection(Of T).

Return Value

Type: System.Boolean
true if item is found in the ICollection(Of T); otherwise, false.

Implements

ICollection(Of T).Contains(T)

Implementations can vary in how they determine equality of objects; for example, List(Of T) uses Comparer(Of T).Default, whereas SortedDictionary(Of TKey, TValue) allows the user to specify the IComparer(Of T) implementation to use for comparing keys.

This method is an O(n) operation, where n is Count.

Windows Phone OS

Supported in: 8.1, 8.0

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