public int CapNhat(LOAIVAITRO lpDTO)
 {
     try
     {
         LinQDataContext db = new LinQDataContext(global::DAOAuction.Properties.Settings.Default.webdoantruongConnectionString);
         return db.LOAIVAITRO_update(
             lpDTO.MaLoaiVaiTro,
             lpDTO.TenLoaiVaiTro
             );
     }
     catch (Exception ex)
     {
         throw (ex);
     }
 }