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Does Stamp.BindPdf has problems with filled out form PDFs?


I did the following:

  • Openend a form PDF and inserted values in the form fields and saved the stream
  • then used that stream with Stamp.BindPDF to put that form PDF as a stamp on my other main PDF file
  • After applying the stamp I opened the stamped PDF and only see the stamp without the filled out fields!!! Why?

Here is the code:

using System;

using System.Collections;

using System.Configuration;

using System.Data;

using System.Linq;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.HtmlControls;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Xml.Linq;

using Aspose.Pdf.Kit;

using System.IO;

using System.Collections.Generic;

using Aspose.Words;

using Aspose.Words.Fields;

namespace TestWebApp


public partial class StamperForm : System.Web.UI.Page


protected void Page_Load(object sender, EventArgs e)


string currentDir = Server.MapPath("bin");

string footerPdf = Path.Combine(currentDir, "Footer.pdf");

string testPdf = Path.Combine(currentDir, "main.pdf");

string resultPdf = Path.Combine(currentDir, "test.pdf");

Dictionary<string, string> footerProperties = new Dictionary<string, string>();

footerProperties.Add("Title", "My test footer ");

footerProperties.Add("DOCID", "2010-123456");

footerProperties.Add("DOCVersion", "1.3");

footerProperties.Add("DOCStatus", "Published");

footerProperties.Add("PrintDate", "2010-03-02");

MemoryStream footerStream = GetFilledOutFooterStream(footerPdf, footerProperties);

footerStream.Seek(0, SeekOrigin.Begin);

Stamp aStamp = new Stamp();

// aStamp.BindPdf(Path.Combine(Server.MapPath("bin"), "temp.pdf"), 1);

aStamp.BindPdf(footerStream, 1);

aStamp.IsBackground = false;

PdfFileStamp stamper = new PdfFileStamp(testPdf, resultPdf);





private MemoryStream GetFilledOutFooterStream(string footerPdfUri, Dictionary<string, string> footerProperties)


MemoryStream ms = new MemoryStream();

string extension = Path.GetExtension(footerPdfUri).TrimStart('.').ToLowerInvariant();

switch (extension)


case "pdf":

using (FileStream footerStream = File.OpenRead(footerPdfUri))


Aspose.Pdf.Kit.Form form = new Aspose.Pdf.Kit.Form(footerStream, ms);

foreach (string field in form.FieldsNames)


string fieldName = string.Empty;

int start = field.LastIndexOf(".");

int stop = field.LastIndexOf("[");

if (start != -1 && stop != -1)

fieldName = field.Substring(start + 1, stop - start - 1);


fieldName = field;

if (footerProperties.ContainsKey(fieldName))


form.FillField(field, footerProperties[fieldName]);




ms.Seek(0, SeekOrigin.Begin);

FileStream fs = File.OpenWrite(Path.Combine(Server.MapPath("bin"), "temp.pdf"));

byte[] buffer = ms.ToArray();

fs.Write(buffer, 0, buffer.Length);




case "doc":

Document doc = new Document(footerPdfUri);

FormFieldCollection ffCol = doc.Range.FormFields;

foreach (FormField field in ffCol)


if (field.Type == Aspose.Words.Fields.FieldType.FieldFormTextInput)


if (footerProperties.ContainsKey(field.Name))


field.Result = footerProperties[field.Name];




doc.Save(ms, SaveFormat.Pdf);



throw new InvalidOperationException("Footer file extension is not supported.");


return ms;




Hi Andreas,

We’re investigating this issue at our end. You’ll be updated with the results the earliest possible.

We’re sorry for the inconvenience.

Hi Andreas,

I have tested and reproduced this issue at my end. This issue has been logged as PDFKITNET-14899 in our issue tracking system. Our team will look into this issue and you’ll be updated via this forum thread once the issue is resolved.

We’re sorry for the inconvenience.