iTextSharp.text.pdf.PRAcroForm.IterateFields C# (CSharp) Метод

        protected void IterateFields(PdfArray fieldlist, PRIndirectReference fieldDict, String parentPath)
        {
            foreach (PRIndirectReference refi in fieldlist.ArrayList) {
                PdfDictionary dict = (PdfDictionary) PdfReader.GetPdfObjectRelease(refi);

                // if we are not a field dictionary, pass our parent's values
                PRIndirectReference myFieldDict = fieldDict;
                String fullPath = parentPath;
                PdfString tField = (PdfString)dict.Get(PdfName.T);
                bool isFieldDict = tField != null;

                if (isFieldDict) {
                    myFieldDict = refi;
                    if (parentPath == null) {
                        fullPath = tField.ToString();
                    } else {
                        fullPath = parentPath + '.' + tField.ToString();
                    }
                }

                PdfArray kids = (PdfArray)dict.Get(PdfName.KIDS);
                if (kids != null) {
                    PushAttrib(dict);
                    IterateFields(kids, myFieldDict, fullPath);
                    stack.RemoveAt(stack.Count - 1);   // pop
                }
                else {          // leaf node
                    if (myFieldDict != null) {
                        PdfDictionary mergedDict = (PdfDictionary)stack[stack.Count - 1];
                        if (isFieldDict)
                            mergedDict = MergeAttrib(mergedDict, dict);

                        mergedDict.Put(PdfName.T, new PdfString(fullPath));
                        FieldInformation fi = new FieldInformation(fullPath, mergedDict, myFieldDict);
                        fields.Add(fi);
                        fieldByName[fullPath] = fi;
                    }
                }
            }
        }