ListBox.SelectedIndexCollection.Contains(Int32) 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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Determines whether the specified index is located within the collection.

public:
 bool Contains(int selectedIndex);

public bool Contains(int selectedIndex);

member this.Contains : int -> bool

Public Function Contains (selectedIndex As Integer) As Boolean

Parameters

selectedIndex: Int32

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.

Remarks

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

Applies to

Produit	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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