private void btnDangNhap_Click(object sender, EventArgs e) { string taikhoan = txtTaiKhoan.Text.Trim(); string matkhau = txtMatKhau.Text; var rs = dangNhapBUS.dangNhap(taikhoan, matkhau); if (rs != null) { this.Close(); var lst = PhanQuyenBUS.GetList(rs.VaiTro); foreach (var roleForm in lst) { Globalvar.DictMyRoleForm.Add(roleForm.MaForm, roleForm); } Globalvar.TK.MaTK = rs.MaTK; Globalvar.TK.VaiTro = rs.VaiTro; } else { this.Close(); login frm = new login(); MessageBox.Show("sai tài khoản hoặc mật khẩu"); frm.ShowDialog(); } }