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Array.System.Collections.IList.Contains Method

Determines whether an element is in the Array.

Namespace: System
Assembly: mscorlib (in mscorlib.dll)

'Declaration
Private Function System.Collections.IList.Contains ( _
	value As Object _
) As Boolean Implements IList.Contains
'Usage
Dim instance As Array
Dim value As Object
Dim returnValue As Boolean

returnValue = CType(instance, IList).Contains(value)
J# supports the use of explicit interface implementations, but not the declaration of new ones.
JScript supports the use of explicit interface implementations, but not the declarations of new ones.

Parameters

value

The object to locate in the Array. The element to locate can be a null reference (Nothing in Visual Basic) for reference types.

Return Value

true if value is found in the Array; otherwise, false.

Exception typeCondition

RankException

The current Array is multidimensional.

This method performs a linear search; therefore, this method is an O(n) operation, where n is ICollection.Count.

This method determines equality by calling the Object.Equals method.

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

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

Supported in: 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0

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