Maintain Expanded State of TreeNode

[Robert]

I'm working with the Telerik RadTreeView;

One objective for the functionality of the RadTreeView is to allow a User to either click the plus (+) sign (next to Node Name), or click the actual Node Name, and expand the Node;

<telerik:RadTreeView ID="RadTreeView1" runat="server"

         OnNodeExpand="RadTreeView1_NodeExpand" ForeColor="Black"
            Font-Names="Microsoft Sans Serif"
            onnodeclick="RadTreeView1_NodeClick" Height="600px" Width="300px"
                    Font-Size="Medium" OnClientNodeClicked="ClientNodeClicked">

        </telerik:RadTreeView>

<script type="text/javascript" language="javascript">
    function ClientNodeClicked(sender, eventArgs) {
        var node = eventArgs.get_node();
        //alert("You clicked " + node.get_text());
        if (node) {
            node.expand();
        }

    }
</script>

The above code works briefly, and expands a selected RadTreeView Node for a split second; However, because the RadTreeView is being built dynamically in the C# code-behind, a post back occurs, and the expanded node quickly returns to an un-expanded state;

Thanks in advance for any insight;  Best regards - Rob

[Plamen]

Hello Robert ,

Here is a sample project that is showing a similar functionality as in the Load on Demand demo and works as expected on click.

All the best,
Plamen Zdravkov
the Telerik team