ItextSharp - Acrofields are empty

Question

I have a PDF form with filled out fields. If I try to read the acrofields they are empty. But in the PDF I can change the values and save them.

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Answer 1

Here is my c#-Code:

   PdfReader reader = new PdfReader(src);
        PdfDictionary root = reader.Catalog;
        PdfDictionary form = root.GetAsDict(PdfName.ACROFORM);
        PdfArray fields = form.GetAsArray(PdfName.FIELDS);

        PdfDictionary page;
        PdfArray annots;
        for (int i = 1; i <= reader.NumberOfPages; i++)
        {
            page = reader.GetPageN(i);
            annots = page.GetAsArray(PdfName.ANNOTS);
            for (int j = 0; j < annots.Size; j++)
            {
                fields.Add(annots.GetAsIndirectObject(j));
            }
        }
        PdfStamper stamper = new PdfStamper(reader, new FileStream(dest, FileMode.Create));
        stamper.Close();
        reader.Close();