How do I Combine/Merge PDFs with Fillable Form Fields using iTextSharp?

Question

Using iTextSharp, how can I merge multiple PDFs into one PDF without losing the Form Fields and their properties in each individual PDF?

(I would prefer

Answer 1

you can also use this code.... it will merge all the pdf file without losing field value..

    Document document = new Document();
    try
        {         
           string destinationfile = desktopPath.Replace(@"d:\outputfile.pdf");
           PdfCopyFields copier = new PdfCopyFields(new FileStream(destinationfile,     FileMode.Create));
            PdfImportedPage page;

            //Loops for each file that has been listed
            foreach (string filename in fileList)
            {
                flag++;
                try
                {
                    //The current file path
                    string filePath = sourcefolder + filename;

                    PdfReader reader = new PdfReader(filePath);
                    copier.AddDocument(reader);

                }
                catch
                {

                }
            }
            copier.Close();
        }