public DataObject GetDataObject(UIElement draggedElement, Point location)
        {
            DataObject  data = new DataObject();
            ToolboxItem item = GetToolboxItem(draggedElement);

            if (item != null)
            {
                item.IsBeingDragged = true;
                data.SetData("Helios.Visual", item.CreateControl());
            }
            return(data);
        }