protected void btnThem_Click(object sender, EventArgs e) { try { TaiKhoanController taikhoanController = new TaiKhoanController(); long userID = taikhoanController.ThemTaiKhoan(txtTenDangnhap.Text, txtTenNhanvien.Text, txtMatkhau.Text); taikhoanController.ThemPhanquyen(Convert.ToInt32(ddlQuyen.SelectedValue), userID); btnHuy_Click(sender, e); hienthiQuyen(); hienthiTaikhoan(); } catch (Exception ex) { lblRegexTaikhoan.Text = ex.Message; } }