private void form2_MyEvent() { //MessageBox.Show("YYYYYYYYYYYYYYYYYYYY"); s1.FurnitureContainer.Children.Clear(); s1.rooms.Clear(); s1.listBox.Items.Clear(); Getxmal xmal = new Getxmal("2.xml"); xmal.scenelayout(ref s1.rooms); foreach (NewRoom roomm in s1.rooms) { ListBoxItem item = new ListBoxItem(); item.Content = roomm.roomname; s1.listBox.Items.Add(item); } }