OnClientCheckedStateChanged

The OnClientCheckedStateChanged client-side event occurs immediately after a button has been checked.

To check a button it should be marked with CheckOnClick="True"

The event handler receives two parameters:

1. The instance of the toolbar firing the event.

2. An eventArgs parameter containing the following methods:

• get_item returns a reference to the toolbar item that was checked. In this case this is a RadToolBarButton.

• get_domEvent returns the browser's event object

You can use this event to respond when a button has been checked.

ASPNET

<script type="text/javascript">
    function checkedStateChanged(sender, args) {
        alert("checked");
    }
</script>

<telerik:RadToolBar RenderMode="Lightweight" ID="RadToolBar1" runat="server" 
	OnClientCheckedStateChanged="checkedStateChanged">
    <Items>
        <telerik:RadToolBarButton Text="Button1" CheckOnClick="true">
        </telerik:RadToolBarButton>
        <telerik:RadToolBarButton Text="Button1" CheckOnClick="true">
        </telerik:RadToolBarButton>
        <telerik:RadToolBarButton Text="Button1" CheckOnClick="true">
        </telerik:RadToolBarButton>
    </Items>
</telerik:RadToolBar>