private async void EnumerateSerialDevices() { _cdDeviceId = null; _crDeviceId = null; _tsDeviceId = null; DeviceInformationCollection deviceinfos = await DeviceInformation.FindAllAsync(SerialDevice.GetDeviceSelector()); foreach (DeviceInformation deviceinfo in deviceinfos) { Log($"Serial device ID={deviceinfo.Id}"); if (await _cdDevice.IsDeviceOnPort(deviceinfo.Id)) { _cdDeviceId = deviceinfo.Id; _logger.Log("cdDevice TRUE", LoggingLevel.Information); } else { _logger.Log("cdDevice FALSE", LoggingLevel.Information); } if (await _crDevice.IsDeviceOnPort(deviceinfo.Id)) { _crDeviceId = deviceinfo.Id; _logger.Log("crDevice TRUE", LoggingLevel.Information); } else { _logger.Log("crDevice FALSE", LoggingLevel.Information); } if (await _tsDevice.IsDeviceOnPort(deviceinfo.Id)) { _tsDeviceId = deviceinfo.Id; _logger.Log("tsDevice TRUE", LoggingLevel.Information); } else { _logger.Log("tsDevice FALSE", LoggingLevel.Information); } } _ = Dispatcher.RunAsync(CoreDispatcherPriority.Low, ConnectSerialDevices); }