The OnClientNodeClicking client-side event occurs just before the user navigates to a node using mouse or keyboard. The event is called just prior to postback or url redirection and can be canceled.

The event handler receives parameters:

1. The treeview instance that fired the event.

2. Event arguments with functions:

   • get_node() retrieves a reference to the clicked on node.

   • set_cancel() - call this function to specify wether the event should be canceled (true) or not (false).

   • get_domEvent() retrieves a DOM event object of the node click.

The example below shows how to cancel the event if the text of the node is "Search"

CopyASPX

<script type="text/javascript" language="javascript">

    function ClientNodeClicking(sender, eventArgs) {
        var node = eventArgs.get_node();
        if (node.get_text() == "Search") {
            eventArgs.set_cancel(true);
        }
    }
</script>

<telerik:RadTreeView ID="RadTreeView1" runat="server" OnClientNodeClicking="ClientNodeClicking">
</telerik:RadTreeView>