private void save_Click(object sender, RoutedEventArgs e)
        {
            if (network.Text != "")
            {
                _network = App.am.Networks.Add();
                _network.Names = network.Text;
                _network.Comm = "COM" + comms.Text;
                _network.Status = "disconnected";
                _network.Save();

                System.Windows.MessageBox.Show("Network saved ");
                Refresh();
            }
            else
            {
                MessageBox.Show("please input the network name");
            }
        }