private void btn_connect_Click(object sender, EventArgs e)
 {
     if ((cB_serialPort.Items.Count != 0) && (cB_baundRate.Items.Count != 0))
     {
         Controller controller = new Controller();
         ModeSelect modeSelect = new ModeSelect(ref controller, Convert.ToString(cB_serialPort.SelectedItem), Convert.ToInt32(cB_baundRate.SelectedItem), Convert.ToInt32(cB_DataBits.SelectedItem), Static.StringToParity(Convert.ToString(cB_Parity.SelectedItem)));
         modeSelect.Show();
         this.Hide();
     }
 }