public int Update(Obj_DanhHieu obj)
 {
     return(DanhHieu.Update(obj));
 }
 public int Delete(Obj_DanhHieu obj)
 {
     return(DanhHieu.Delete(obj));
 }
        public int Insert(Obj_DanhHieu obj)
        {
            return(DanhHieu.Insert(obj));

            return(0);
        }