public AccountDAO() { db = new QuanLyTieuDoanDbContext(); }
public LopDAO() { db = new QuanLyTieuDoanDbContext(); }
public HocVienDAO() { db = new QuanLyTieuDoanDbContext(); }
public MonTheLucDAO() { db = new QuanLyTieuDoanDbContext(); }
public CongTacDangDAO() { db = new QuanLyTieuDoanDbContext(); }
public DaiDoiDAO() { db = new QuanLyTieuDoanDbContext(); }