问UWP BarcodeScanner DataRecieved事件在WPF应用程序中未触发

EN

string selector = BarcodeScanner.GetDeviceSelector();
DeviceInformationCollection deviceCollection = await DeviceInformation.FindAllAsync(selector);
var device = deviceCollection.FirstOrDefault();

if (device != null)
{
    barcodeScanner = await BarcodeScanner.FromIdAsync(device.Id);

    if (barcodeScanner != null)
    {
        //after successful creation, claim the scanner for exclusive use
        var claimedBarcodeScanner = await barcodeScanner.ClaimScannerAsync();

        if (claimedBarcodeScanner != null)
        {
            //Subscribe to the events
            claimedBarcodeScanner.ReleaseDeviceRequested += ClaimedBarcodeScanner_ReleaseDeviceRequested;
            claimedBarcodeScanner.DataReceived += WhenScannerDataReceived;
            claimedBarcodeScanner.IsDecodeDataEnabled = true;

            //after successful claim, enable scanner for data events to fire
            await claimedBarcodeScanner.EnableAsync();
        }
        else
        {
            FrameworkDI.Logger.LogErrorSource("Failure to claim barcodeScanner");
        }
    }
    else
    {
        FrameworkDI.Logger.LogErrorSource("No Barcode Scanner Present");
    }
}
else
{
    FrameworkDI.Logger.LogErrorSource("No Barcode Scanner Present");
}

private void WhenScannerDataReceived(object sender, DataEventArgs args)
{
    string symbologyName = BarcodeSymbologies.GetName(args.Report.ScanDataType);
    var scanDataLabelReader = DataReader.FromBuffer(args.Report.ScanDataLabel);
    string barcode = scanDataLabelReader.ReadString(args.Report.ScanDataLabel.Length);
}