/// <summary>
/// This method returns the first available Barcode Scanner. To enumerate and find a particular device use the device enumeration code.
/// </summary>
/// <returns>a boolean value based on whether it found a compatible scanner connected</returns>
private async Task <bool> CreateDefaultScannerObjectAsync(BarcodeScannerInstance instance)
{
BarcodeScanner scanner = null;
scanner = await BarcodeScanner.GetDefaultAsync();
if (scanner == null)
{
rootPage.NotifyUser("Barcode scanner not found. Please connect a barcode scanner.", NotifyType.ErrorMessage);
return(false);
}
switch (instance)
{
case BarcodeScannerInstance.Instance1:
scannerInstance1 = scanner;
break;
case BarcodeScannerInstance.Instance2:
scannerInstance2 = scanner;
break;
default:
return(false);
}
return(true);
}
public async void GetScanningDevice()
{
_barcodeScanner = await BarcodeScanner.GetDefaultAsync();
if (_barcodeScanner != null)
{
_claimedBarcodeScanner = await _barcodeScanner.ClaimScannerAsync();
}
else
{
ErrorMsg = "scanning device not found";
return;
}
if (_claimedBarcodeScanner != null)
{
_claimedBarcodeScanner.DataReceived += ClaimedBarcode_DataRecieved;
_claimedBarcodeScanner.IsDecodeDataEnabled = true;
await _claimedBarcodeScanner.EnableAsync();
}
else
{
ErrorMsg = "scanning device cant be claimed ";
return;
}
}
/// <summary>
/// This method returns the first available Barcode Scanner. To enumerate and find a particular device use the device enumeration code.
/// </summary>
/// <returns>a boolean value based on whether it found a compatible scanner connected</returns>
private async Task <bool> CreateDefaultScannerObjectAsync(BarcodeScannerInstance instance)
{
BarcodeScanner scanner = null;
scanner = await BarcodeScanner.GetDefaultAsync();
if (scanner == null)
{
UpdateOutput("Scanner not found. Please connect a Barcode Scanner.");
return(false);
}
switch (instance)
{
case BarcodeScannerInstance.Instance1:
scannerInstance1 = scanner;
UpdateOutput("Instance1 Default Barcode Scanner created.");
break;
case BarcodeScannerInstance.Instance2:
scannerInstance2 = scanner;
UpdateOutput("Instance2 Default Barcode Scanner created.");
break;
default:
return(false);
}
return(true);
}
private async Task <bool> CreateDefaultScannerObject()
{
if (scanner == null)
{
Debug.WriteLine("Creating barcode scanner object: Retrieving default device");
try
{
scanner = await BarcodeScanner.GetDefaultAsync();
}
catch (Exception ex)
{
Debug.WriteLine("Could not retrieve default barcode device: " + ex.Message);
return(false);
}
if (scanner == null)
{
Debug.WriteLine("Barcode scanner not found. Please connect a barcode scanner.");
return(false);
}
}
return(true);
}
private async void GetScanner()
{
// only finds the first POS device connected to the pc, ok if only one POS device is connected
barcodeScanner = await BarcodeScanner.GetDefaultAsync();
// for later to find a specific device
//string selector = BarcodeScanner.GetDeviceSelector();
//DeviceInformationCollection deviceCollection = await DeviceInformation.FindAllAsync(selector);
//foreach (DeviceInformation devInfo in deviceCollection)
//{
// Debug.WriteLine("{0} {1}", devInfo.Name, devInfo.Id);
// if (devInfo.Name.Contains("1202"))
// {
// Debug.WriteLine("Found one");
// }
//}
//claim device
if (barcodeScanner != null)
{
try
{
claimedBarcodeScanner = await barcodeScanner.ClaimScannerAsync();
if (claimedBarcodeScanner != null)
{
// keep device claimed no matter what
claimedBarcodeScanner.ReleaseDeviceRequested += claimedBarcodeScanner_ReleaseDeviceRequested;
// enable decoding properties
claimedBarcodeScanner.DataReceived += claimedBarcodeScanner_DataReceived;
claimedBarcodeScanner.IsDecodeDataEnabled = true;
await claimedBarcodeScanner.EnableAsync();
}
Debug.WriteLine("ToString | ClaimedBarcodeObject: " + claimedBarcodeScanner.ToString());
}
catch (Exception ex)
{
Debug.WriteLine("EX: ClaimScannerAsync() - " + ex.Message);
}
}
else
{
Debug.WriteLine("No POS-Barcode Scanner found.");
}
//unclaim a device
//if (claimedBarcodeScanner != null)
//{
// claimedBarcodeScanner.Dispose();
// claimedBarcodeScanner = null;
//}
}
/// <summary>
/// Creates the default barcode scanner.
/// </summary>
/// <returns>true if barcode scanner is created. Otherwise returns false</returns>
private async Task <bool> CreateDefaultScannerObject()
{
if (scanner == null)
{
scanner = await BarcodeScanner.GetDefaultAsync();
if (scanner == null)
{
return(false);
}
}
return(true);
}
/// <summary>
/// Creates the default barcode scanner.
/// </summary>
/// <returns>true if barcode scanner is created. Otherwise returns false</returns>
private async Task <bool> CreateDefaultScannerObject()
{
if (scanner == null)
{
rootPage.NotifyUser("Creating barcode scanner object.", NotifyType.StatusMessage);
scanner = await BarcodeScanner.GetDefaultAsync();
if (scanner == null)
{
rootPage.NotifyUser("Barcode scanner not found. Please connect a barcode scanner.", NotifyType.ErrorMessage);
return(false);
}
}
return(true);
}
//<SnippetCreateBarcodeScanner>
//Creates a barcode scanner.
private async Task <bool> CreateDefaultScannerObject()
{
if (scanner == null)
{
scanner = await BarcodeScanner.GetDefaultAsync();
if (scanner != null)
{
// UpdateOutput("Default Barcode Scanner created.");
// UpdateOutput("Device Id is:" + scanner.DeviceId);
}
else
{
// UpdateOutput("Barcode Scanner not found. Please connect a Barcode Scanner.");
return(false);
}
}
return(true);
}
private async void buttonEnable_Click(object sender, RoutedEventArgs e)
{
scanner = await BarcodeScanner.GetDefaultAsync();
if (claimedScanner != null)
{
claimedScanner.Dispose();
}
claimedScanner = await scanner.ClaimScannerAsync();
claimedScanner.DataReceived += ClamedScanner_DataReceived;
await claimedScanner.EnableAsync();
claimedScanner.IsDecodeDataEnabled = true;
await claimedScanner.SetActiveSymbologiesAsync(new uint[] {
BarcodeSymbologies.Aztec,
BarcodeSymbologies.AusPost,
BarcodeSymbologies.CanPost,
BarcodeSymbologies.Codabar,
BarcodeSymbologies.Codablock128,
BarcodeSymbologies.Code11,
BarcodeSymbologies.Code128,
BarcodeSymbologies.Code39,
BarcodeSymbologies.Code39Ex,
BarcodeSymbologies.DataMatrix,
BarcodeSymbologies.Ean13,
BarcodeSymbologies.Ean8,
BarcodeSymbologies.Gs1128,
BarcodeSymbologies.Gs1DatabarType1,
BarcodeSymbologies.Gs1DatabarType2,
BarcodeSymbologies.Gs1DatabarType3,
BarcodeSymbologies.Pdf417,
BarcodeSymbologies.Qr,
BarcodeSymbologies.OcrB,
BarcodeSymbologies.UccEan128,
BarcodeSymbologies.Upca,
BarcodeSymbologies.Upce,
BarcodeSymbologies.UsPostNet,
});
changeButtonEnable(true);
}