/// <summary>
/// Event handler for Symbology listbox selection changed.
/// Get symbology attributes and populate attribute UI components
/// </summary>
/// <param name="sender"></param>
/// <param name="args"></param>
private async void SymbologySelection_Changed(object sender, SelectionChangedEventArgs args)
{
if (claimedScanner != null)
{
SymbologyListEntry symbologyListEntry = (SymbologyListEntry)SymbologyListBox.SelectedItem;
if (symbologyListEntry != null)
{
SetSymbologyAttributesButton.IsEnabled = false;
try
{
symbologyAttributes = await claimedScanner.GetSymbologyAttributesAsync(symbologyListEntry.Id);
}
catch (Exception)
{
symbologyAttributes = null;
}
if (symbologyAttributes != null)
{
SetSymbologyAttributesButton.IsEnabled = true;
// initialize attributes UIs
EnableCheckDigit.IsEnabled = symbologyAttributes.IsCheckDigitValidationSupported;
EnableCheckDigit.IsChecked = symbologyAttributes.IsCheckDigitValidationEnabled;
TransmitCheckDigit.IsEnabled = symbologyAttributes.IsCheckDigitTransmissionSupported;
TransmitCheckDigit.IsChecked = symbologyAttributes.IsCheckDigitTransmissionEnabled;
SetDecodeRangeLimits.IsEnabled = symbologyAttributes.IsDecodeLengthSupported;
bool decodeLengthEnabled = (symbologyAttributes.DecodeLengthKind == BarcodeSymbologyDecodeLengthKind.Range);
SetDecodeRangeLimits.IsChecked = decodeLengthEnabled;
if (decodeLengthEnabled)
{
MinimumDecodeLength.Value = Math.Min(symbologyAttributes.DecodeLength1, symbologyAttributes.DecodeLength2);
MaximumDecodeLength.Value = Math.Max(symbologyAttributes.DecodeLength1, symbologyAttributes.DecodeLength2);
}
}
else
{
rootPage.NotifyUser("Symbology attributes are not available.", NotifyType.ErrorMessage);
EnableCheckDigit.IsEnabled = false;
TransmitCheckDigit.IsEnabled = false;
SetDecodeRangeLimits.IsEnabled = false;
}
}
}
}