public MainWindow() { InitializeComponent(); _heartRateMonitor = new HeartRateLE.Bluetooth.HeartRateMonitor(); // we should always monitor the connection status _heartRateMonitor.ConnectionStatusChanged -= HrDeviceOnDeviceConnectionStatusChanged; _heartRateMonitor.ConnectionStatusChanged += HrDeviceOnDeviceConnectionStatusChanged; //// we can create value parser and listen for parsed values of given characteristic //HrParser.ConnectWithCharacteristic(HrDevice.HeartRate.HeartRateMeasurement); _heartRateMonitor.RateChanged -= HrParserOnValueChanged; _heartRateMonitor.RateChanged += HrParserOnValueChanged; }