ListBox.SelectedIndexCollection.IList.Contains(Object) Method

Reference

Definition

Namespace:: System.Windows.Forms

Assembly:: System.Windows.Forms.dll

Source:: ListBox.SelectedIndexCollection.cs

Source:: ListBox.SelectedIndexCollection.cs

Source:: ListBox.SelectedIndexCollection.cs

Important

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For a description of this member, see Contains(Object).

 virtual bool System.Collections.IList.Contains(System::Object ^ selectedIndex) = System::Collections::IList::Contains;

bool IList.Contains(object selectedIndex);

bool IList.Contains(object? selectedIndex);

abstract member System.Collections.IList.Contains : obj -> bool
override this.System.Collections.IList.Contains : obj -> bool

Function Contains (selectedIndex As Object) As Boolean Implements IList.Contains

Parameters

selectedIndex: Object

The index to locate in the collection.

Returns

Boolean

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

Implements

Contains(Object)

Remarks

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.

Applies to

Product	Versions
.NET Framework	1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
Windows Desktop	3.0, 3.1, 5, 6, 7, 8, 9, 10

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