OnSelectedIndexChanged

The selectedIndexChanged event occurs when user changes the checked stated of an item in RadCheckBoxList.

The event handler receives two parameters:

1. The instance of the loaded RadCheckBoxList control.

2. An eventArgs parameter of type Telerik.Web.UI.CheckBoxListSelectedIndexChangedEventArgs, containing the following properties and methods:

   • get_newSelectedIndex() - returns the index of the currently selected item.

Example 1: Handling RadCheckBoxList OnSelectedIndexChanged event.

ASP.NET

<script type="text/javascript">
	function OnSelectedIndexChanged(sender, args) {
		var selectedItem = sender.get_items()[args.get_newSelectedIndex()];
		alert("Checked state changed for " + newItem.get_text() + " language.");
	}
</script>

<telerik:RadCheckBoxList runat="server" ID="RadCheckBoxList1">
	<ClientEvents OnSelectedIndexChanged="OnSelectedIndexChanged" />
	<Items>
		<telerik:ButtonListItem Text="English" Selected="true" />
		<telerik:ButtonListItem Text="German" />
		<telerik:ButtonListItem Text="French" />
	</Items>
</telerik:RadCheckBoxList>

See Also

• CheckBoxList Object

• Events Overview

• OnLoad (load)

• OnItemLoad (itemLoad)

• OnItemClicking (itemClicking)

• OnItemClicked (itemClicked)

• OnSelectedIndexChanging (selectedIndexChanging)

• OnItemMouseOver (itemMouseOver)

• OnItemMouseOut (itemMouseOut)