public void PhanQuyen() { if (combonvpq.SelectedIndex < 0) { ToastNotification.Show(this, "Chưa chọn giáo viên", null, 2000, (eToastGlowColor)eToastGlowColor.Blue, (eToastPosition)eToastPosition.BottomCenter); return; } if (comboquyenhan.SelectedIndex < 0) { ToastNotification.Show(this, "Chưa chọn quyền hạn", null, 2000, (eToastGlowColor)eToastGlowColor.Blue, (eToastPosition)eToastPosition.BottomCenter); return; } DataTable numberr; numberr = _db.PhanQuyen(ref err, Convert.ToInt32(combonvpq.SelectedValue), qh); if (numberr.Rows.Count > 0) { ToastNotification.Show(this, numberr.Rows[0]["ErrMsg"].ToString(), null, 2000, (eToastGlowColor)eToastGlowColor.Blue, (eToastPosition)eToastPosition.BottomCenter); } }