Standard way to read barcode after upgrading ZXing.Net from 0.16.5 to 0.16.6

Question

After upgrading ZXing.Net nuget package from 0.16.5 to 0.16.6 the existing source shows the error:

Using the generic type 'BarcodeReader' requires 1 type arguments

public void ReadBarcode(System.Drawing.Bitmap readerBitmap, BarcodeFormat barcodeFormat)
{
    // here when instantiate the barcode reader object 
    // the error occurs with the new updated nuget package 0.16.6
    var barcodeReader = new ZXing.BarcodeReader();

    barcodeReader.Options.PossibleFormats = new List<BarcodeFormat>();
    barcodeReader.Options.PossibleFormats.Add(barcodeFormat);
    barcodeReader.AutoRotate = true;
    barcodeReader.Options.TryHarder = true;
    barcodeReader.Options.PureBarcode = false;

    ZXing.Result barcodeResult = null;

    try
    {
        barcodeResult = barcodeReader.Decode(readerBitmap);
    }
    catch (Exception ex)
    {
        Log.LogError($"Exception in barcode lib - {ex.Message}");
    }

Should I change from BarcodeReader to BarcodeReaderGeneric or IBarcodeReader or IBarcodeReaderGeneric or should I add a parameter createLuminanceSource ?

I was not able to find existing examples using 0.16.6 and even the documentation still shows the parameterless constructor.

Answer 1

If you use ZXing.Net with.Net Core /.Net Standard you have to use one of the different binding packages. They contain specific BarcodeReader implementations for the different image libraries. https://www.nuget.org/packages?q=zxing.bindings That's by design because.Net core doesn't include a bitmap implementation in the core package.

Answer 2

If you get desperate and can't get the BarcodeReader which inherits from BarcodeReader<Bitmap> to be referenced correctly, you could call the base constructor of BarcodeReader<Bitmap> directly which is called when you create a new BarcodeReader :

var luminanceSource = (Func<Bitmap, LuminanceSource>) (bitmap => new BitmapLuminanceSource(bitmap));
var barcodeReader = new ZXing.BarcodeReader<Bitmap>(null, luminanceSource, null);



//...so on
barcodeReader.Options.PossibleFormats = new List<BarcodeFormat>();
barcodeReader.Options.PossibleFormats.Add(barcodeFormat);