private void btConnect_Click(object sender, RoutedEventArgs e)
        {
            // search for the USB device and connect if available

            usbController.findTargetDevice();
            if (usbController.getDeviceStatus())
            {
                this.lblStatus.Content = "Connected";
            }
            else
            {
                this.lblStatus.Content = "Connection Failed";
            }
        }