private void cbxDanhMucPhong_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
string loaiphong = cbxDanhMucPhong.SelectedValue.ToString();
string kq = nghiep_vu.ThongTin_LoaiPhong(loaiphong);
XmlDocument lpinfo = new XmlDocument();
lpinfo.LoadXml(kq);
XmlElement info = lpinfo.SelectSingleNode("/LOAIPHONG") as XmlElement;
txtLoaiPhong.Text = info.GetAttribute("TENLOAIPHONG").ToString();
txtGia.Text = info.GetAttribute("DONGIA").ToString();
txtSoLgNg.Text = info.GetAttribute("SONGUOITOIDA").ToString();
txtSoLgPg.Text = info.GetAttribute("SLTRONG").ToString();
}
