private void SelectDropDownListItem(ref DnnComboBox ddl, string key)
 {
     if (Settings.ContainsKey(key))
     {
         ddl.ClearSelection();
         var selItem = ddl.FindItemByValue(Convert.ToString(Settings[key]));
         if (selItem != null)
         {
             selItem.Selected = true;
         }
     }
 }