Merging PDF files with dynamic fields - we are losing the dynamic fields

We are using Aspose.PDF to merge pdf files. Attached are 2 sample documents that need to be merge, they are the same document, renamed.

Problem Statement: When documents with dynamic fields like drop downs and editable text fields are merged with other such documents, the result is losing these dynamic fields.

Expected Result: We want to preserve these dynamic fields even after the merge.

Aspose’s online example at - http://www.aspose.com/demos/.net-components/aspose.pdf/csharp/pdfdemos/General/Concatenate.aspx is able to do the merge correctly, but when write the same code in a standalone console or windows app, it is still losing these dynamic fields for the first document.

Code Snippet:

using System;

using System.IO;

using System.Windows.Forms;

usingAspose.Pdf;

namespace AsposeMerge

{

    publicpartialclassForm1 : Form

    {

        public Form1()

        {

            InitializeComponent();

        }

        privatevoid button1_Click(object sender, EventArgs e)

        {

            AsposeMerge();

        }

        privatevoid AsposeMerge()

        {

           string f1 = @"C:\Users\nbdelxy\Desktop\d0ae7428-4eb2-4c59-abd4-2b9fdb373baa.pdf";

           string f2 = @"C:\Users\nbdelxy\Desktop\testmergepdfs.pdf";

           string outFile = @"C:\Users\nbdelxy\Desktop\testing123.pdf";

            Aspose.Pdf.License lic = new Aspose.Pdf.License();

            lic.SetLicense("Aspose.Total.lic");

            Aspose.Pdf.Document doc1 = newDocument(f1);

            Aspose.Pdf.Document doc2 = newDocument(f2);

           MemoryStream outStream = newMemoryStream();

           try

            {

                doc1.Pages.Add(doc2.Pages);

                doc1.Save(outStream);

               using (FileStream file = newFileStream(outFile,FileMode.Create, FileAccess.Write))

                {

                   byte[] bytes = newbyte[outStream.Length];

                    outStream.Read(bytes, 0, (int)outStream.Length);

                    file.Write(bytes, 0, bytes.Length);

                    outStream.Close();

                }

            }

           catch (Exception ex)

            {

                ;

            }

        }

    }

}v