private async void SetSymbologyAttributes_Click(object sender, RoutedEventArgs e)
{
if ((claimedScanner != null) && (symbologyAttributes != null))
{
// populate attributes
if (symbologyAttributes.IsCheckDigitValidationSupported)
{
symbologyAttributes.IsCheckDigitValidationEnabled = EnableCheckDigit.IsChecked.Value;
}
if (symbologyAttributes.IsCheckDigitTransmissionSupported)
{
symbologyAttributes.IsCheckDigitTransmissionEnabled = TransmitCheckDigit.IsChecked.Value;
}
if (symbologyAttributes.IsDecodeLengthSupported)
{
if (SetDecodeRangeLimits.IsChecked.Value)
{
symbologyAttributes.DecodeLengthKind = BarcodeSymbologyDecodeLengthKind.Range;
symbologyAttributes.DecodeLength1 = (uint)MinimumDecodeLength.Value;
symbologyAttributes.DecodeLength2 = (uint)MaximumDecodeLength.Value;
}
else
{
symbologyAttributes.DecodeLengthKind = BarcodeSymbologyDecodeLengthKind.AnyLength;
}
}
SymbologyListEntry symbologyListEntry = (SymbologyListEntry)SymbologyListBox.SelectedItem;
if (symbologyListEntry != null)
{
bool attributesSet = false;
try
{
attributesSet = await claimedScanner.SetSymbologyAttributesAsync(symbologyListEntry.Id, symbologyAttributes);
}
catch (Exception)
{
// Scanner could not set the attributes.
}
if (attributesSet)
{
rootPage.NotifyUser("Attributes set for symbology '" + symbologyListEntry.Name + "'", NotifyType.StatusMessage);
}
else
{
rootPage.NotifyUser("Attributes could not be set for symbology '" + symbologyListEntry.Name + "'.", NotifyType.ErrorMessage);
}
}
else
{
rootPage.NotifyUser("Select a symbology from the list.", NotifyType.ErrorMessage);
}
}
}
/// <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;
}
}
}
}
