ListBox.SelectedIndexCollection.IndexOf(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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Returns the index within the ListBox.SelectedIndexCollection of the specified index from the ListBox.ObjectCollection of the ListBox.

public:
 int IndexOf(int selectedIndex);

public int IndexOf(int selectedIndex);

member this.IndexOf : int -> int

Public Function IndexOf (selectedIndex As Integer) As Integer

Parameters

selectedIndex: Int32

The zero-based index from the ListBox.ObjectCollection to locate in this collection.

Returns

Int32

The zero-based index in the collection where the specified index of the ListBox.ObjectCollection was located within the ListBox.SelectedIndexCollection; otherwise, negative one (-1).

Remarks

Once you know that an item is located within the collection (using the Contains method), you can use the IndexOf method to determine where a specific index position within the ListBox.ObjectCollection for the ListBox is stored within the ListBox.SelectedIndexCollection.

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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