合并表单后，iText字段将无法计算

Question

我正在使用此脚本循环访问用户文件并填写details.pdf模板的副本，并将它们作为一个文件合并在一起。

我的问题是tfTotalPrice字段不计算，直到我手动打开文档javascript并更改某些内容，如添加警报。我认为它可能与需要“/ CO”字典密钥有关，但我不明白为什么。我刚刚在ISO32000-1 doc中读到过。

static void Main(string[] args)
    {
        int i = 0;
        int partsTotal = args.Count();

        //template page
        string tempDetails = @"C:	empDetails.pdf";
        //final multi page quote
        string finishedQuote = @"C:	empQuote.pdf";

        DateTime processedDate = DateTime.Now;
        string dateProc = processedDate.ToString("MM/dd/yyyy");

        Console.WriteLine("Please Enter Your Customer Name and Press Enter");
        string customer = Console.ReadLine();

        //This will hold the memory streams and be used to merge them all
        List<byte[]> pagesToMerge = new List<byte[]>();

        Document doc = new Document();
        PdfSmartCopy copy = new PdfSmartCopy(doc, new FileStream(finishedQuote, FileMode.Create));

        doc.Open();
        copy.SetMergeFields();
        copy.SetPdfVersion(PdfWriter.PDF_VERSION_1_7);

        List<PdfReader> readers = new List<PdfReader>();

        for (i = 0; i < partsTotal; i++)
        {
            string partFile = args[i].ToString();
            string partFileName = partFile.Substring(partFile.LastIndexOf(@"") + 1);
            string partFileLocation = partFile.Substring(0, partFile.LastIndexOf(@""));
            Console.WriteLine("Processing : " + partFileName);

            PdfReader reader = new PdfReader(RenameFields(tempDetails, i));
            readers.Add(reader);
            copy.AddDocument(reader);

        }

        doc.Close();
        foreach (PdfReader reader in readers)
        {
            reader.Close();
        }


        //Should we open it up?
        bool response = GetYorN();
        if (response == true)
        {
            System.Diagnostics.Process.Start(finishedQuote);
        }

    }

    static byte[] RenameFields(string src, int i)
    {
        //This method creates a new document in memory with newly named unique fields
        MemoryStream baos = new MemoryStream();
        PdfReader reader = new PdfReader(src);
        PdfStamper stamper = new PdfStamper(reader, baos);
        stamper.Writer.SetPdfVersion(PdfWriter.PDF_VERSION_1_7);
        stamper.AcroFields.GenerateAppearances = true;
        stamper.FormFlattening = false;

        AcroFields form = stamper.AcroFields;
        //populate names with the dictionary keys for the current file(stream)
        string[] names = new string[stamper.AcroFields.Fields.Keys.Count];
        stamper.AcroFields.Fields.Keys.CopyTo(names, 0);

        //rename all fields in this file(stream)
        foreach (string name in names)
        {
            stamper.AcroFields.RenameField(name, name + i);
        }

        //Add the calculation action to totalPrice(i)
        AcroFields.Item newTotalField = form.GetFieldItem("tfTotalPrice" + i);
        PdfDictionary newTotalRefDict = (PdfDictionary)PdfReader.GetPdfObject(newTotalField.GetWidgetRef(0));
        PdfString newTotalP = newTotalRefDict.GetAsString(PdfName.T);

        AcroFields.Item newSetupField = stamper.AcroFields.GetFieldItem("tfSetupPrice" + i);
        PdfDictionary newSetupRefDict = (PdfDictionary)PdfReader.GetPdfObject(newSetupField.GetWidgetRef(0));
        PdfString newSetupP = newSetupRefDict.GetAsString(PdfName.T);

        AcroFields.Item newToolField = stamper.AcroFields.GetFieldItem("tfToolPrice" + i);
        PdfDictionary newToolRefDict = (PdfDictionary)PdfReader.GetPdfObject(newToolField.GetWidgetRef(0));
        PdfString newToolP = newToolRefDict.GetAsString(PdfName.T);

        AcroFields.Item newPieceField = stamper.AcroFields.GetFieldItem("tfPiecePrice" + i);
        PdfDictionary newPieceRefDict = (PdfDictionary)PdfReader.GetPdfObject(newPieceField.GetWidgetRef(0));
        PdfString newPieceP = newPieceRefDict.GetAsString(PdfName.T);

        AcroFields.Item newFixtureField = stamper.AcroFields.GetFieldItem("tfFixturePrice" + i);
        PdfDictionary newFixtureRefDict = (PdfDictionary)PdfReader.GetPdfObject(newFixtureField.GetWidgetRef(0));
        PdfString newFixtureP = newFixtureRefDict.GetAsString(PdfName.T);

        //Declare the sum action
        string newJS = "this.getField("" + newTotalP + "").value = (this.getField("" + newPieceP + "").value + this.getField("" + newToolP + "").value + this.getField("" + newFixtureP + "").value + this.getField("" + newSetupP + "").value);";
        PdfAction pdfAction = PdfAction.JavaScript(newJS, stamper.Writer);
        PdfDictionary widgetRefDict = (PdfDictionary)PdfReader.GetPdfObject(newTotalField.GetWidgetRef(0));
        //AA = Additional Action Annotation Dictionary
        PdfDictionary actionDict = widgetRefDict.GetAsDict(PdfName.AA);
        //C = Calculation that lives inside of the AA dictionary
        PdfDictionary calcDict = actionDict.GetAsDict(new PdfName("C"));

        //Plug in the js calc with the new form field names
        calcDict.Put(new PdfName("JS"), new PdfString(newJS));

        //stamper.SetPageAction(PdfWriter.PAGE_OPEN, PdfAction.JavaScript(newJS, stamper.Writer), 1);

        //close up shop and return the new doc in memory
        stamper.Close();
        reader.Close();
        return baos.ToArray();
    }

任何帮助将不胜感激，我一直坚持这个:(谢谢你

这是PDFs的链接