private void OnSelectedDeviceChanged(object sender, SelectionChangedEventArgs e)
        {
            if (DevicesList.SelectedItems.Count != 1)
            {
                return;
            }

            string deviceId = ((DeviceSummary)DevicesList.SelectedItem).Name;

            DeviceTwinPanel.Visibility = Visibility.Visible;
            DeviceTwinPanel.LoadAsync(deviceId);
        }
 public void SetConnectionString(string cs)
 {
     _connectionString = cs;
     DeviceTwinPanel.SetConnectionString(cs);
 }