Merge Document 'cannot access file being used by another process'

When trying to write to just one field with the MergeDocument type, I get this error on some pdf's and not others. Not quite sure what is going on.

Hi,

Please try loading the source PDF in the form of byte array and see it resolves the issue on your end.

Here is a code sample:

           //Load input PDF in the form of byte array using PdfDocument class.
            byte[] pdfByteData = File.ReadAllBytes(@"Source PDF file path");
            PdfDocument pdf = new PdfDocument(pdfByteData);
            MergeDocument document = new MergeDocument(pdf);

Thanks,
ceTe Software Support Team

That worked perfect! I should have thought of that. Thanks again.