public CategoryDao() { cf = new QLWebsiteTSEntities4(); }
public NVDao() { cf = new QLWebsiteTSEntities4(); }
public AccountDao() { cf = new QLWebsiteTSEntities4(); }
public FoodDao() { cf = new QLWebsiteTSEntities4(); }
public OrderDetailDao() //khởi tạo OrderDetailDao khởi tạo luôn biến db { cf = new QLWebsiteTSEntities4(); }
public UserDao() { cf = new QLWebsiteTSEntities4(); }