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ListBox.SelectedIndexCollection.IList.Contains Method

This API supports the .NET Framework infrastructure and is not intended to be used directly from your code.

For a description of this member, see IList.Contains.

Namespace:  System.Windows.Forms
Assembly:  System.Windows.Forms (in System.Windows.Forms.dll)

bool IList.Contains(
	Object selectedIndex
)

Parameters

selectedIndex
Type: System.Object

The index to locate in the collection.

Return Value

Type: System.Boolean
true if the specified index from the ListBox.ObjectCollection for the ListBox is an item in this collection; otherwise, false.

Implements

IList.Contains(Object)

This member is an explicit interface member implementation. It can be used only when the ListBox.SelectedIndexCollection instance is cast to an IList interface.

The IList.Contains method enables you to determine whether an index position from the ListBox.ObjectCollection a member of the selected indexes stored in the ListBox.SelectedIndexCollection. You can use this method to determine whether a specific item in a multiple-selection list box is selected.

.NET Framework

Supported in: 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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

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