The OnClientDataBound event is added in Q3 2008 release and fires when a Node is being created during Web Service Load on Demand. The event cannot be canceled.

The event handler receives the following parameters:

1. The RadTreeView instance that fired the event.

2. Event arguments with functions:

   • get_dataItem() - gets a reference to the DataItem (RadTreeNodeData or any other serializable custom class) that the current Node is being bound to.

   • get_domEvent() - undefined for this event.

   • get_node() - gets a reference to the Node that is being bound.

The following example shows how a value is extracted from the DataItem and set as a Custom Attribute to Nodes loaded via a Web Service.

CopyJavaScript

        function onNodeDataBound(sender, eventArgs) {
            var node = eventArgs.get_node();
            var dataItem = eventArgs.get_dataItem();
            var CustomAttribute = dataItem.CustomAttribute;

            node.get_attributes().setAttribute("CustomAttribute", CustomAttribute);
        }

Tip
Another usage of the DataItem object is in client-side Templates that are about to be introduced with the next version of ASP.NET AJAX. See the following blog post for more details - RadControls and ASP.NET Ajax 4.0 Preview.