Returning iTextSharp PDF as memorystream causes StreamNotSupported

Question

I\'m creating a PDF file using the PdfStamper in iTextSharp and return the PDF as a memorystream object to the calling function, that is then used to display the PDF in Tele

Answer 1

For iText 7, the syntax has changed a bit from mkl's answer.

You can prevent the writer from closing the stream witht the SetCloseStream() method:

PdfWriter writer = new PdfWriter(stream);
writer.SetCloseStream(false);

Answer 2

The problem arises because the memory stream gets implicitly closed when the PdfStamper is closed. To prevent this add

pdfStamper.Writer.CloseStream = false;

before

pdfStamper.Close();

This instructs the stamper not to close the stream.