ComboBox.SelectedIndex Property


The .NET API Reference documentation has a new home. Visit the .NET API Browser on to see the new experience.

Gets or sets the index specifying the currently selected item.

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

override SelectedIndex : int with get, set

Property Value

Type: System.Int32

A zero-based index of the currently selected item. A value of negative one (-1) is returned if no item is selected.

Exception Condition

The specified index is less than or equal to -2.


The specified index is greater than or equal to the number of items in the combo box.

This property indicates the zero-based index of the currently selected item in the combo box list. Setting a new index raises the SelectedIndexChanged event.

SelectedIndex, SelectedValue, and FormattingEnabled are related as follows:


To deselect the currently selected item, set the SelectedIndex to -1. You cannot set the SelectedIndex of a ComboBox item to -1 if the item is a data-bound item.

The following code example show how to use the FindString method and SelectedIndex property. The example is part of a complete example in the ComboBox class overview.

No code example is currently available or this language may not be supported.

.NET Framework
Available since 1.1
Return to top