public FormKhachHang() { InitializeComponent(); kh = new BLLKhachHang(); dtKh = new DataTable(); }
public FrmBanHang() { InitializeComponent(); hoaDon = new BLLHoaDonBan(); khachHang = new BLLKhachHang(); nhanVien = new BLLNhanVien(); laptop = new BLLLaptop(); chiTiet = new BLLChiTietHoaDonBan(); dbLoaiLaptop = new BLLLoaiLaptop(); }