public FoodCategoryRepository(QuanLyQuanAnEntities _db) { this.db = _db; }
public BillInfoRepository(QuanLyQuanAnEntities _db) { this.db = _db; }
public TableFoodRepository(QuanLyQuanAnEntities _db) { db = _db; }
public AccountRepository(QuanLyQuanAnEntities _db) { this.db = _db; }