Merging multiple PDFs using iTextSharp in c net

Question

Well i m trying to merge multiple PDFs in to one   I gives no errors while compiling  I tried to merge the docs first but that went wrong because I m working with tables   This is the asp net code-behind  if  Button Equals  PreviewWord               String eventTemplate   Server MapPath   ERAS Badges Template EventTemp    EventName     doc             String SinglePreview   Server MapPath   ERAS Badges Template PreviewSingle    EventName     doc             String PDFPreview   Server MapPath   ERAS Badges Template PDFPreviewSingle    EventName     pdf             String previewPDFs   Server MapPath   ERAS Badges Template PreviewPDFs    EventName     pdf             if  System IO File Exists  String eventTemplate                          if  vulGegevensIn    true                                This creates a Worddocument and fills in names etc from database                 CreateWordDocument vulGegevensIn  eventTemplate  SinglePreview  false                     This saves the SinglePreview doc as a PDF  param place of PDFPreview                 CreatePDF SinglePreview  PDFPreview                       Trying to merge                 String   previewsSmall new String 1                   previewsSmall 0    PDFPreview                  PDFMergenITextSharp MergeFiles previewPDFs  previewsSmall                                  merge PDFs here                                           here               no here                                 This is the PDFMergenITextSharpClass  public static class PDFMergenITextSharp    public static void MergeFiles string destinationFile  string   sourceFiles         try               int f   0             we create a reader for a certain document         PdfReader reader   new PdfReader sourceFiles f               we retrieve the total number of pages         int n   reader NumberOfPages            Console WriteLine  There are     n     pages in the original file                step 1  creation of a document-object         Document document   new Document reader GetPageSizeWithRotation 1               step 2  we create a writer that listens to the document         PdfWriter writer   PdfWriter GetInstance document  new FileStream destinationFile  FileMode Create               step 3  we open the document         document Open            PdfContentByte cb   writer DirectContent          PdfImportedPage page          int rotation             step 4  we add content         while  f  lt  sourceFiles Length                        int i   0              while  i  lt  n                                i                    document SetPageSize reader GetPageSizeWithRotation i                    document NewPage                    page   writer GetImportedPage reader  i                   rotation   reader GetPageRotation i                   if  rotation    90    rotation    270                                        cb AddTemplate page  0  -1f  1f  0  0  reader GetPageSizeWithRotation i  Height                                     else                                       cb AddTemplate page  1f  0  0  1f  0  0                                       Console WriteLine  Processed page     i                             f                if  f  lt  sourceFiles Length                                reader   new PdfReader sourceFiles f                       we retrieve the total number of pages                 n   reader NumberOfPages                    Console WriteLine  There are     n     pages in the original file                                        step 5  we close the document         document Close              catch  Exception e                string strOb   e Message           public static int CountPageNo string strFileName           we create a reader for a certain document     PdfReader reader   new PdfReader strFileName          we retrieve the total number of pages     return reader NumberOfPages

User · Answer

Code For Merging PDF s in Itextsharp   public static void Merge List lt String gt  InFiles  String OutFile                 using  FileStream stream   new FileStream OutFile  FileMode Create           using  Document doc   new Document            using  PdfCopy pdf   new PdfCopy doc  stream                         doc Open                 PdfReader reader   null              PdfImportedPage page   null                 fixed typo             InFiles ForEach file   gt                                reader   new PdfReader file                    for  int i   0  i  lt  reader NumberOfPages  i                                          page   pdf GetImportedPage reader  i   1                       pdf AddPage page                                      pdf FreeReader reader                   reader Close                    File Delete file

User · Answer

I don t see this solution anywhere and supposedly     according to one person  the proper way to do it is with copyPagesTo    This does work I tested it  Your mileage may vary between city and open road driving  Goo luck      public static bool MergePDFs List lt string gt  lststrInputFiles  string OutputFile  out int iPageCount  out string strError                strError   string Empty           PdfWriter pdfWriter   new PdfWriter OutputFile           PdfDocument pdfDocumentOut   new PdfDocument pdfWriter            PdfReader pdfReader0   new PdfReader lststrInputFiles 0            PdfDocument pdfDocument0   new PdfDocument pdfReader0           int iFirstPdfPageCount0   pdfDocument0 GetNumberOfPages            pdfDocument0 CopyPagesTo 1  iFirstPdfPageCount0  pdfDocumentOut           iPageCount   pdfDocumentOut GetNumberOfPages             for  int ii   1  ii  lt  lststrInputFiles Count  ii                          PdfReader pdfReader1   new PdfReader lststrInputFiles ii                PdfDocument pdfDocument1   new PdfDocument pdfReader1               int iFirstPdfPageCount1   pdfDocument1 GetNumberOfPages                iPageCount    iFirstPdfPageCount1              pdfDocument1 CopyPagesTo 1  iFirstPdfPageCount1  pdfDocumentOut               int iFirstPdfPageCount00   pdfDocumentOut GetNumberOfPages                       pdfDocumentOut Close             return true

User · Answer

I found the answer   Instead of the 2nd Method  add more files to the first array of input files   public static void CombineMultiplePDFs string   fileNames  string outFile           step 1  creation of a document-object     Document document   new Document          create newFileStream object which will be disposed at the end     using  FileStream newFileStream   new FileStream outFile  FileMode Create                   step 2  we create a writer that listens to the document        PdfCopy writer   new PdfCopy document  newFileStream           if  writer    null                      return                      step 3  we open the document        document Open            foreach  string fileName in fileNames                         we create a reader for a certain document            PdfReader reader   new PdfReader fileName              reader ConsolidateNamedDestinations                   step 4  we add content            for  int i   1  i  lt   reader NumberOfPages  i                                                PdfImportedPage page   writer GetImportedPage reader  i                  writer AddPage page                            PRAcroForm form   reader AcroForm             if  form    null                              writer CopyAcroForm reader                            reader Close                        step 5  we close the document and writer        writer Close           document Close          disposes the newFileStream object

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Merge byte arrays of multiple PDF files       public static byte   MergePDFs List lt byte   gt  pdfFiles                  if  pdfFiles Count  gt  1                        PdfReader finalPdf              Document pdfContainer              PdfWriter pdfCopy              MemoryStream msFinalPdf   new MemoryStream                 finalPdf   new PdfReader pdfFiles 0                pdfContainer   new Document                pdfCopy   new PdfSmartCopy pdfContainer  msFinalPdf                pdfContainer Open                 for  int k   0  k  lt  pdfFiles Count  k                                  finalPdf   new PdfReader pdfFiles k                    for  int i   1  i  lt  finalPdf NumberOfPages   1  i                                            PdfSmartCopy pdfCopy  AddPage pdfCopy GetImportedPage finalPdf  i                                      pdfCopy FreeReader finalPdf                              finalPdf Close                pdfCopy Close                pdfContainer Close                 return msFinalPdf ToArray                      else if  pdfFiles Count    1                        return pdfFiles 0                     return null

User · Answer

Using iTextSharp dll  protected void Page Load object sender  EventArgs e        String   files     C  ENROLLDOCS A1 pdf C  ENROLLDOCS A2 pdf  Split           MergeFiles   C  ENROLLDOCS New1 pdf   files     public void MergeFiles string destinationFile  string   sourceFiles        if  System IO File Exists destinationFile           System IO File Delete destinationFile        string   sSrcFile      sSrcFile   new string 2        string   arr   new string 2       for  int i   0  i  lt   sourceFiles Length - 1  i                  if  sourceFiles i     null                        if  sourceFiles i  Trim                          arr i    sourceFiles i  ToString                         if  arr    null                sSrcFile   new string 2            for  int ic   0  ic  lt   arr Length - 1  ic                          sSrcFile ic    arr ic  ToString                        try               int f   0           PdfReader reader   new PdfReader sSrcFile f            int n   reader NumberOfPages          Response Write  There are     n     pages in the original file             Document document   new Document PageSize A4            PdfWriter writer   PdfWriter GetInstance document  new FileStream destinationFile  FileMode Create             document Open            PdfContentByte cb   writer DirectContent          PdfImportedPage page           int rotation          while  f  lt  sSrcFile Length                        int i   0              while  i  lt  n                                i                     document SetPageSize PageSize A4                   document NewPage                    page   writer GetImportedPage reader  i                    rotation   reader GetPageRotation i                   if  rotation    90    rotation    270                                        cb AddTemplate page  0  -1f  1f  0  0  reader GetPageSizeWithRotation i  Height                                     else                                       cb AddTemplate page  1f  0  0  1f  0  0                                     Response Write   n Processed page     i                              f                if  f  lt  sSrcFile Length                                reader   new PdfReader sSrcFile f                    n   reader NumberOfPages                  Response Write  There are     n     pages in the original file                                     Response Write  Success            document Close              catch  Exception e                Response Write e Message

User · Answer

I found a very nice solution on this site   http   weblogs sqlteam com mladenp archive 2014 01 10 simple-merging-of-pdf-documents-with-itextsharp-5-4-5 aspx  I update the method in this mode         public static bool MergePDFs IEnumerable lt string gt  fileNames  string targetPdf                bool merged   true          using  FileStream stream   new FileStream targetPdf  FileMode Create                         Document document   new Document                PdfCopy pdf   new PdfCopy document  stream               PdfReader reader   null              try                               document Open                    foreach  string file in fileNames                                        reader   new PdfReader file                       pdf AddDocument reader                       reader Close                                                catch  Exception                                merged   false                  if  reader    null                                        reader Close                                                finally                               if  document    null                                        document Close                                                      return merged

[c#] Merging multiple PDFs using iTextSharp in c#.net

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