private void Button_createRoom_click(object sender, RoutedEventArgs e)
{
Form_createRoom form = new Form_createRoom(null);
form.Owner = this;
form.ShowDialog();
}
private void Button_editRow_click(object sender, RoutedEventArgs e)
{
Entity.Rooms room = ((FrameworkElement)sender).DataContext as Entity.Rooms;
Console.WriteLine("clicked edit row id = " + room.Id);
Form_createRoom form = new Form_createRoom(room);
form.Owner = this;
form.ShowDialog();
}