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Stack.Contains Method

Determines whether an element is in the Stack.

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

'Declaration
Public Overridable Function Contains ( _
	obj As Object _
) As Boolean
'Usage
Dim instance As Stack
Dim obj As Object
Dim returnValue As Boolean

returnValue = instance.Contains(obj)
public boolean Contains (
	Object obj
)
public function Contains (
	obj : Object
) : boolean
Not applicable.

Parameters

obj

The Object to locate in the Stack. The value can be a null reference (Nothing in Visual Basic).

Return Value

true, if obj is found in the Stack; otherwise, false.

This method determines equality by calling Object.Equals.

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

Starting with the .NET Framework 2.0, this method uses the collection’s objects’ Equals and CompareTo methods on item to determine whether item exists. In the earlier versions of the .NET Framework, this determination was made by using the Equals and CompareTo methods of the item parameter on the objects in the collection.

Windows 98, Windows Server 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 Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0

XNA Framework

Supported in: 1.0

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