Disabling radComboBox loses treeview

[Jeanne]

I have a radComboBox containing a radTreeView for selection. It is based very strongly on one of the demos. It worked beautifully until I decided to enable/disable it in the client, based on other page events. Once the radComboBox has been disabled and re-enabled, the following lines of code in the radComboBox's OnClientDropDownOpened event handler throw an error because it can no longer find the control "rtvRights" in the item (oTreeView is undefined):

var oTreeView = sender.get_items().getItem(0).findControl("rtvRights");
var oSelectedNode = oTreeView.get_selectedNode();

As I said, this code works fine unless you disable and then enable the radComboBox using it's client-side disable/enable methods.

[Plamen]

Hi Jeanne,

 
I have inspected the issue by adding the following code to our TreeView in ComboBox demo but unfortunately could not observe the unusual behavior by enabling and disabling the RadCombobox from the client:

    function OnClientClicked(sender, args) {
        var combo = $find('<%=RadComboBox1.ClientID %>');
        if (combo.get_enabled()) {
            combo.disable();
        }
        else {
            combo.enable();
        }
    }


</script>
<telerik:RadButton runat="server" ID="RAdButtopn1" AutoPostBack="false" OnClientClicked="OnClientClicked">
</telerik:RadButton>

Would you please expalin what else should be done in order to observe the described unusual behavior so we can be more helpful?

Kind regards,
Plamen Zdravkov
the Telerik team