How to read PDF form data using iTextSharp?

Question

I am trying to find out if it is possible to read PDF Form data (Forms filled in and saved with the form) using iTextSharp. How can I do this?

Answer 1

This worked for me! Note the parameters when defining stamper! '\0', true

            string TempFilename = Path.GetTempFileName();

            PdfReader pdfReader = new PdfReader(FileName);
            //PdfStamper stamper = new PdfStamper(pdfReader, new FileStream(TempFilename, FileMode.Create));
            PdfStamper stamper = new PdfStamper(pdfReader, new FileStream(TempFilename, FileMode.Create), '\0', true);

            AcroFields fields = stamper.AcroFields;
            AcroFields pdfFormFields = pdfReader.AcroFields;

            foreach (KeyValuePair kvp in fields.Fields)
            {
                string FieldValue = GetXMLNode(XMLFile, kvp.Key);
                if (FieldValue != "")
                {
                    fields.SetField(kvp.Key, FieldValue);
                }
            }

            stamper.FormFlattening = false;
            stamper.Close();
            pdfReader.Close()