[Solved] clientside refresh of root node

[Markus]

Hello everybody!

I have a radtreeview with loadondemand (Serversidecallback).

I have implemented a javascript method that refreshed a node:

function RefreshNode(nodeId2Refresh)
        {
            var treeView = $find('<%= radpanel.Items[0].Items[0].FindControl("rree").ClientID%>');
            var node = treeView.findNodeByValue(nodeId2Refresh).get_parent();

            treeView.trackChanges();
            node.get_nodes().clear();
            node.set_expanded(false);
            treeView.commitChanges();

            node.set_expandMode(Telerik.Web.UI.TreeNodeExpandMode.ServerSideCallBack);
            node.expand();
        }

How can I refresh the root nodes this way??
any suggestions?
of course the root element have no parent!

Thx in advance & kind regards

[Nikolay]

Hi Markus,

I tried the approach you described and it worked as expected at our side. The NodeExpand event was fired upon clicking the "refresh" button.
Attached, please find a small and running project on the matter. Download it and give it a go.

Am I missing something?

Kind regards,
Nick
the Telerik team

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[Markus]

Hello Nick!
thx for your answer,

The problem is, that if i select a root node, and I click "refresh", the Javascript compiler says that it cannot find a parent for this node, of course.

I fear that i need a special javascript method for the rootnodes that removes the nodes and loads them afterwards with the same logic when the page loads...

[Nikolay]

Hi Markus,

You can remove the root node at the client-side from the nodes collection of the treeview itself (treeView.get_nodes().remove(node);). However, you will not be able to access any database or other server logic from the client-side to replicate the server's page_load logic on the client.

Regards,
Nick
the Telerik team

Instantly find answers to your questions at the new Telerik Support Center