private void btnDuyet_Click(object sender, EventArgs e) { int loaiPhong = int.Parse(cmbLoaiPhong.SelectedValue.ToString()); int tinhTrang = int.Parse(cmbTinhTrang.SelectedValue.ToString()); HienThiDanhSachPhong(PhongDAO.DuyetDSPhong(loaiPhong, tinhTrang)); }