public int CapNhatWhitOutPass(NGUOIDUNG lpDTO)
 {
     try
     {
         LinQDataContext db = new LinQDataContext(global::DAOAuction.Properties.Settings.Default.webdoantruongConnectionString);
         return db.NGUOIDUNG_update(
             lpDTO.MaNguoiDung,
             lpDTO.Username,
             lpDTO.Password,
             lpDTO.HoTen,
             lpDTO.Email,
             lpDTO.MaVaiTro
             );
     }
     catch (Exception ex)
     {
         throw (ex);
     }
 }