public void ReleaseScanner()
{
if (_claimedBarcodeScanner != null)
{
_claimedBarcodeScanner.DataReceived -= _claimedBarcodeScanner_DataReceived;
_claimedBarcodeScanner.ReleaseDeviceRequested -= _claimedBarcodeScanner_ReleaseDeviceRequested;
_claimedBarcodeScanner.Dispose();
_claimedBarcodeScanner = null;
}
_barcodeScanner = null;
}
public void ReleaseScanner()
{
if (_claimedBarcodeScanner != null)
{
// Detach the event handlers
_claimedBarcodeScanner.DataReceived -= _claimedBarcodeScanner_DataReceived;
_claimedBarcodeScanner.ReleaseDeviceRequested -= _claimedBarcodeScanner_ReleaseDeviceRequested;
// Release the Barcode Scanner and set to null
_claimedBarcodeScanner.Dispose();
_claimedBarcodeScanner = null;
}
_barcodeScanner = null;
}
private void _claimedBarcodeScanner_DataReceived(Windows.Devices.PointOfService.ClaimedBarcodeScanner sender, Windows.Devices.PointOfService.BarcodeScannerDataReceivedEventArgs args)
{
var rawdata = Windows.Storage.Streams.DataReader.FromBuffer(args.Report.ScanData);
var barcodedata = Windows.Storage.Streams.DataReader.FromBuffer(args.Report.ScanDataLabel);
// Remove the checksum
string strippedbc = barcodedata.ReadString(args.Report.ScanDataLabel.Length);
strippedbc = strippedbc.Remove(strippedbc.Length - 2);
// Trim the end
strippedbc = strippedbc.TrimEnd();
OnBarcodeScanned(args.Report.ScanDataType, rawdata.ReadString(args.Report.ScanData.Length), strippedbc);
}
/// <summary>
/// Claim the barcode scanner
/// </summary>
/// <returns>true if claimed</returns>
private async Task <bool> ClaimScanner()
{
if (_claimedBarcodeScanner != null)
{
Log.Trace("Scanner was allready claimed");
return(true);
}
else
{
// claim the barcode scanner
_claimedBarcodeScanner = await _barcodeScanner.ClaimScannerAsync();
// enable the claimed barcode scanner
if (_claimedBarcodeScanner == null)
{
return(false);
}
}
return(true);
}
private void _claimedBarcodeScanner_ReleaseDeviceRequested(object sender, Windows.Devices.PointOfService.ClaimedBarcodeScanner e)
{
e.RetainDevice();
Log.Trace("Event ReleaseDeviceRequest received. Retaining the Barcode Scanner.");
}
private void _claimedBarcodeScanner_ReleaseDeviceRequested(object sender, Windows.Devices.PointOfService.ClaimedBarcodeScanner e)
{
e.RetainDevice();
}
