public int Xoa(int mahoatdong)
 {
     DAODangKyHoatDong DANGKYHOATDONG = new DAODangKyHoatDong();
     return DANGKYHOATDONG.Xoa(mahoatdong);
 }
 public int Xoa(DANGKYHOATDONG lpDTO)
 {
     DAODangKyHoatDong DANGKYHOATDONG = new DAODangKyHoatDong();
     return DANGKYHOATDONG.Xoa(lpDTO);
 }