private void btnCourierSettings_Click(object sender, EventArgs e)
 {
     CourierSettings settings = new CourierSettings();
     settings.ShowDialog();
 }
 private void btnCourierSettings_Click(object sender, EventArgs e)
 {
     if (_cp != null) { _cp.Focus(); }
     CourierSettings courierSettings = new CourierSettings();
     courierSettings.ShowDialog();
 }