public NguoiDung()
{
InitializeComponent();
bllLoaiNguoiDung = new bllLoaiNguoiDung();
dtNguoiDung = new DataTable();
dtLoaiNguoiDung = new DataTable();
bllNguoiDung = new bllNguoiDung();
dinhDangHienThiNut(false);
}
public HoaDon()
{
InitializeComponent();
bllLapDonDatBan = new bllLapDonDatBan();
bllNguoiDung = new bllNguoiDung();
bllKhachHang = new bllKhachHang();
bllHoaDon = new bllHoaDon();
dtDSKhachHang = new DataTable();
dtNguoiDung = new DataTable();
dtDonDatBan = new DataTable();
dtTTKhachHang = new DataTable();
dtTTDonDatBan = new DataTable();
dtTTHDMonAn = new DataTable();
dtTTHDDV = new DataTable();
}
public DangNhap()
{
InitializeComponent();
bllNguoiDung = new bllNguoiDung();
dt = new DataTable();
}