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ILookup<TKey, TElement>.Contains Method

Microsoft Silverlight will reach end of support after October 2021. Learn more.

Determines whether a specified key exists in the ILookup<TKey, TElement>.

Namespace:  System.Linq
Assembly:  System.Core (in System.Core.dll)

Syntax

'Declaration
Function Contains ( _
    key As TKey _
) As Boolean
bool Contains(
    TKey key
)

Parameters

Return Value

Type: System.Boolean
true if key is in the ILookup<TKey, TElement>; otherwise, false.

Version Information

Silverlight

Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

XNA Framework

Supported in: Xbox 360, Windows Phone OS 7.0

Platforms

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