How to flatten already filled out PDF form using iTextSharp

Question

I\'m using iTextSharp to merge a number of pdf files together into a single file.

I\'m using method described in iTextSharp official tutorials, specifically here, wh

Answer 1

This is the same answer as the accepted one but without any unused variables:

private byte[] GetUnEditablePdf(byte[] fileContents)
{
    byte[] newFileContents = null;

    var reader = new PdfReader(fileContents);

    if (reader.AcroForm != null)
        newFileContents = FlattenPdfFormToBytes(reader);

    else newFileContents = fileContents;

    return newFileContents;
}

private byte[] FlattenPdfFormToBytes(PdfReader reader)
{
    var memStream = new MemoryStream();
    var stamper = new PdfStamper(reader, memStream) { FormFlattening = true };
    stamper.Close();
    return memStream.ToArray();
}