• Filtering and Sorting is gone (I'm a newbee and was hoping to be able to use the auto-creation of these features, which worked without my viewmodels.)
• When trying to modify a dummy property (which has no setter and is supposed to be readonly) an exception occurs. (A TwoWay or OneWayToSource binding cannot work on the read-only property)

In the Telerik Radtreeview I want some of the treeviewitems to be unSelectable until the previous steps are completed. In the background I have a Boolean property isSelectable which is Binded to the TreeviewItem Focusable Property. Before when I was using the windows TreeView Control this Focusable property made the treeviewitems to be UnSelected until the previous steps were completed which is a default behaviour in windows control. Now after converting to the telerik Radtreeview control I can select items even with focusable property set to false And also the treeviewitem are highlighted on hovering over the item. Is there a way I can make it to work so that on setting the RadTreeviewItem focusable property to false the respective Radtreeviewitems are not selectable and shouldn’t highlight on mouse over as a default Focus Behaviour?  following snippet and the screenshot attached is just an example to demonstrate the issue with the focusable property where even with focusable false category1 can be selected and highlighted.

            var plotAreaPanel = sender as ClipPanel;
            var mousePosition = e.GetPosition(plotAreaPanel);
           
            var dataAtMouse = _Chart.DefaultView.ChartArea.AxisX.ConvertPhysicalUnitsToData(mousePosition.X);
            var physicalAtMouse = _Chart.DefaultView.ChartArea.AxisX.ConvertDataUnitsToPhysical(dataAtMouse);

            if (mousePosition.X != physicalAtMouse)
            {
                Debug.Assert(false, "Should never happen");
            }