/// <summary>
 /// 客户端Combobox多级联动
 /// </summary>
 /// <param name="box"></param>
 /// <param name="itemRequested"></param>
 public RadComboBoxClientCascade(RadComboBox box, ItemsRequestedEvent itemRequested)
 {
     this.box = box;
     if (itemRequested != null)
     {
         this.itemRequested  = itemRequested;
         box.ItemsRequested += box_ItemsRequested;
     }
 }
 /// <summary>
 /// 关联子查询
 /// </summary>
 /// <param name="box"></param>
 /// <param name="itemRequested"></param>
 /// <returns></returns>
 public RadComboBoxClientCascade SetSubQuery(RadComboBox box, ItemsRequestedEvent itemRequested)
 {
     return(SetSubQuery(new RadComboBoxClientCascade(box, itemRequested)));
 }