OnClientNodeCollapsed
The OnClientNodeCollapsed client-side event occurs after the user clicks the collapse (minus) button.
The event handler receives parameters:
The TreeView instance that fired the event.
Event arguments with functions:
get_node() retrieves a reference to the clicked on node.
get_domEvent() retrieves a DOM event object of the node collapsing.
The example below demonstrates retrieving a reference to the collapsed parent node.
<telerik:RadTreeView RenderMode="Lightweight" ID="RadTreeView1"
runat="server"
OnClientNodeCollapsed="ClientNodeCollapsed">
</telerik:RadTreeView>
function ClientNodeCollapsed(sender, eventArgs) {
var node = eventArgs.get_node();
alert(node.get_text() + " has collapsed");
}