private void Login1() { FormQLCHBanDT qldt = new FormQLCHBanDT(); BaseFunctions <TaiKhoan> tk1 = new BaseFunctions <TaiKhoan>(); DataTable dt = tk1.ChucNang(); string user = textBoxTenTK.Text; string MK = textBoxMatKhau.Text; int KQ = tk.DangNhap(user, MK).Rows.Count; if (textBoxTenTK.Text.Length == 0 || textBoxMatKhau.Text.Length == 0) { MessageBox.Show("Bạn chưa nhập tên hoặc mật khẩu"); } switch (KQ) { case 0: MessageBox.Show("mật khẩu không đúng!"); break; case 1: this.Hide(); TenTaiKhoan = tk.DangNhap(user, MK).Rows[0][1].ToString(); Phanquyen = PhanQuyen(3); Matkhau = PhanQuyen(4); Nguoidung = PhanQuyen(5); Dangxuat = PhanQuyen(6); Hoadon = PhanQuyen(7); Xemsanpham = PhanQuyen(8); Baohanh = PhanQuyen(9); Nhaphang = PhanQuyen(10); Trahang = PhanQuyen(11); Khachhang = PhanQuyen(12); Mathang = PhanQuyen(13); Nhanvien = PhanQuyen(14); Banggia = PhanQuyen(15); TKdoanhthu = PhanQuyen(16); TKKhachhang = PhanQuyen(16); TKMathang = PhanQuyen(18); textBoxMatKhau.Text = ""; TenTaiKhoan = tk.DangNhap(user, MK).Rows[0][0].ToString(); qldt.ShowDialog(); this.Show(); break; } }