/// <summary>
 /// 设置接收者的所有未阅读消息为已阅
 /// </summary>
 /// <param name="receiver"></param>
 public void SetMessageHasReadByReceiver(string receiver)
 {
     using (DBContainer db = new DBContainer())
     {
         db.P_MIS_SetMessageHasReadByReceiver(receiver);
     }
 }