Null check throws before generating DataMatrix Image about pdfsharp HOT 4 CLOSED

Thanks for the feedback. Fixed it and fix will be included with PDFsharp 6.0.0-preview-2.

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The image will be rendered when you use the GDI build.

Which build are you using?

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I was using PDFsharp-GDI/6.0.0-preview-1.

As a further test, I added these lines to the HelloWorld-gdi,PDFsharp app and reproduced the issue (once getting past other compile issues from missing font files.):

            // Draw DataMatrixCode
            var codeSize = XUnit.FromMillimeter(10);
            var code = new CodeDataMatrix("0123456789", 12, new XSize(codeSize, codeSize));
            gfx.DrawMatrixCode(code, XBrushes.Black, new XPoint(width / 2 - codeSize / 2, height / 2 - 80));

I then modified MatrixCode.cs as follows and was able to produce the Hello World pdf:

        internal XImage? MatrixImage
        {
            get => _matrixImage;
            set => _matrixImage = value;
        }

        XImage? _matrixImage = null!;

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Sorry, I learned about the issue submission template after writing the above, so here is the MCVE zip that reproduces it in the PdfSharp IssueSubmission-gdi project:

Issue.zip

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