public string OnClientItemPopulating { get; set; }

Public Property OnClientItemPopulating As String
	Get
	Set

public:
property String^ OnClientItemPopulating {
	String^ get ();
	void set (String^ value);
}

member OnClientItemPopulating : string with get, set

Property Value

If specified, the OnClientItemPopulating client-side event handler is called when a menu item children are about to be populated. Two parameters are passed to the handler:

• sender, the menu client object;
• eventArgs with three properties:
  • get_item(), the instance of the menu item.
  • get_context(), an user object that will be passed to the web service.
  • set_cancel(), used to cancel the event.

This event can be cancelled.

<script type="text/javascript">
function onClientItemPopulatingHandler(sender, eventArgs)
{
var item = eventArgs.get_item();
var context = eventArgs.get_context();
context["CategoryID"] = item.get_value();
}
</script>

<kettic:KaxMenu ID="KaxMenu1"
runat="server"
OnClientItemPopulating="onClientItemPopulatingHandler">
....
</kettic:KaxMenu>

Reference