RadTreeView ViewState issue when binding different dataset

[Ken Jones]

Hello,

We are using a the RadTreeView control inside a master page that populates data in a content page via a redirect on node click. The problem is that we are binding a different dataset to the tree on page load and then expanding the tree to the node that was clicked. This is causing the nodes in the tree that we have expanded to show the collapsed icon even though they are expanded.

When we then click the icon to expand the node it initially does nothing, click again and it attempts to expand the node and click again and ti successfully collaps the node.

Here is the nodes onclick event to give you some idea:

protected void uiRadTreeView_NodeClick(Object sender, Telerik.Web.UI.RadTreeNodeEventArgs e)
        {
            // Set the session variable search to be null so no highlighting occurs in PopulateContentPane
            Session["Search"] = null;

            string siteId = Request.QueryString["SiteId"];
            if (!String.IsNullOrEmpty(siteId))
            {
                Users user = (Users)Session["User"];
                if (user == null)
                {
                    user = new Users(Page.User.Identity.Name);
                }

                // Log action
                AuditLog.AddEntry(user, TLT.Extranet.DataAccess.Site.Type.General, 3, Int32.Parse(siteId), Int32.Parse(e.Node.Value), Session.SessionID);
                Response.Redirect("Default.aspx?SiteId=" + siteId + "&NodeId=" + e.Node.Value);
            }
        }

Any help to solve this would be much appreciated,

Thanks,

Ken

[Nikolay Tsenkov]

Hi Ken Jones,

This is only the Node_Click handler. Could you please post the code for the initial binding and the code that is triggered on NodeExpand?
Thanks!


Regards,
Nikolay Tsenkov
the Telerik team

[Ken Jones]

Hello,

Thanks for your response. I have managed to sort this out by setting the ExpandMode property of the Nodes back to ClientSide once the data is bound to the tree.

Thanks,

Ken