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.

namespace Tutorial {
    public class FillForm {
        public const String SRC = "../../../resources/pdf/dnd-character.pdf";
        public const String DEST = "../../../results/fill_dnd.pdf";

        public static void Main(String[] args) {
            FileInfo file = new FileInfo(DEST);
            file.Directory.Create();
            new FillForm().ManipulatePdf(SRC, DEST);
        }

        public virtual void ManipulatePdf(String src, String dest) {
            PdfDocument pdf = new PdfDocument(new PdfReader(src), new PdfWriter(dest));
            PdfAcroForm form = PdfFormCreator.GetAcroForm(pdf, true);
            IDictionary<String, PdfFormField> fields = form.GetAllFormFields();
            Console.WriteLine(fields.Count);
            foreach(KeyValuePair<string, PdfFormField> entry in fields)
            {
                Console.WriteLine(entry.Key);
            }
            pdf.Close();
        }
    }
}

Here is the pdf: PDF

My code works with other PDFs, so I feel confident its a PDF issue. Here is a PDF it works with: PDF2

I tried looking into this myself, but the best I could find is this outdated stack question here: ItextSharp – Acrofields are empty

PdfArray fields = form.GetAsArray(PdfName.Fields);

Again, this solution uses form.GetAsArray(PdfName.Fields); so this solution fails for me too. I also checked for Xfa like in the question and that does not seem to present

XfaForm xfa = form.GetXfaForm();
xfa.IsXfaPresent()  // returns false

However, this question led me to look at the PDF Hierarchy in RUPS, and I noticed a difference. Here is the hierarchy of the PDF that works:

The highlighted /T is the reference I want to use to get the string inside /V

Here is the hierarchy of the pdf that doesn’t work:

Again, Want /V using /T (or any other way to specifically get /V really). So, how do I work with this seemingly bad pdf to get the information I want?