private void cmdSuaPhong_Click(object sender, RoutedEventArgs e)
 {
     HyperlinkButton cmdSuaPhong = sender as HyperlinkButton;
     int PhongID = int.Parse(cmdSuaPhong.CommandParameter.ToString());
     frmPhongEdit PhongEdit = new frmPhongEdit();
     PhongEdit.Closed += new EventHandler(PhongEdit_Closed);
     PhongEdit.Phong_Load(PhongID);
     PhongEdit.Show();
 }
 private void cmdThemPhong_Click(object sender, RoutedEventArgs e)
 {
     frmPhongEdit PhongEdit = new frmPhongEdit();
     PhongEdit.Closed += new EventHandler(PhongEdit_Closed);
     PhongEdit.Phong_Load(0);
     PhongEdit.Show();
 }