Magick.net converting PDF to image "unable to create temporary file '': No such file or directory @ error/pdf.c/ReadPDFImage/476"

Question

I'm trying to use Magick.net in a console application to render images from a PDFs and can't seem to get around this problem.

Upon calling "MagickImageCollection.Read(byte[], settings)" I always get a

"unable to create temporary file '': No such file or directory @ error/pdf.c/ReadPDFImage/476"

exception.

I have tried:

Placing both x86 and 64bit Ghostscript dlls in the bin folder.
Using combinations of AnyCPU, x86, 64 versions of Magick.net, with versions of GS
Setting MagickNET.SetGhostscriptDirectory to the program files GS bin folder
Setting MagickNET.SetTempDirectory to a folder in c:/temp and confirmed that my application can access by programatically moving a file in there.
Setting the MagickAnyCPU.CacheDirectory to a folder in c:/temp

I'm out of ideas of what I could be doing wrong

    using (MagickImageCollection images = new MagickImageCollection())
    {
        // Add all the pages of the pdf file to the collection
        images.Read(file, settings);

        switch (orientation)
        {
            case Orientation.Horizontal:
                using (MagickImage image = (MagickImage)images.AppendHorizontally())
                {
                    using (MemoryStream ms = new MemoryStream())
                    {
                        image.Write(ms);

                        return ms.ToArray();
                    }

                }
            case Orientation.Vertical:
                using (MagickImage image = (MagickImage)images.AppendHorizontally())
                {
                    using (MemoryStream ms = new MemoryStream())
                    {
                        image.Write(ms);

                        return ms.ToArray();
                    }
                }
        }
    }

score 1 · Accepted Answer · answered Nov 13 '17 at 19:06

I finally managed to overcome this problem, I was passing the wrong read settings to MagickImageCollection.Read(byte[], settings).

I was telling Magick to read the PDF with the PNG format instead of writing the result to PNG...

MagickReadSettings settings = new MagickReadSettings();
settings.Format = MagickFormat.Png;

I feel a bit silly but the error message completely through me off.

Magick.net converting PDF to image "unable to create temporary file '': No such file or directory @ error/pdf.c/ReadPDFImage/476"

1 Answers1