private void btn_save_Click(object sender, EventArgs e) { try { if (lb_userName.Text != null | lb_userName.Text != "") { foreach (RadioButton rb in rb) { if (rb.Checked == true) { BLL_User.editRole(lb_userName.Text, rb.Tag.ToString().Trim()); } } } else { MessageBox.Show("Chưa Chọn User"); } } catch (Exception) { MessageBox.Show("Thất Bại"); throw; } }