Is there a straight forward way to append one PDF doc to another using iTextSharp?

Question

I\'ve scoured the Web looking for examples on how to do this. I\'ve found a few that seem to be a little more involved then they need to be. So my question is, using iTextShar

Answer 1

I really may be missing something, but I did something much simpler. I concede this solution probably won't update bookmarks (as in the best answer here so far), but it works flawlessly for me. Since I was merging documents with fillable forms, I used PdfCopyFields instead of PdfCopy.

Here is the code (I've stripped all error handling to make the actual code more visible, add a try..finally to close opened resources if you plan on using the code):

    void MergePdfStreams(List Source, Stream Dest)
    {
        PdfCopyFields copy = new PdfCopyFields(Dest);

        foreach (Stream source in Source)
        {
            PdfReader reader = new PdfReader(source);
            copy.AddDocument(reader);
        }

        copy.Close();
    }

You can pass any stream, be it a FileStream, a MemoryStream (useful when reading the PDF from databases, no need for temporary files, etc.)

Sample usage:

    void TestMergePdfStreams()
    {
        List sources = new List()
        {
            new FileStream("template1.pdf", FileMode.Open),
            new FileStream("template2.pdf", FileMode.Open),
            new MemoryStream((byte[])someDataRow["PDF_COLUMN_NAME"])
        };

        MergePdfStreams(sources, new FileStream("MergedOutput.pdf", FileMode.Create));
    }