How to export multiple Crystal Reports into one pdf format ? RSS

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  human2x

  Member

  28 Points

  156 Posts

  How to export multiple Crystal Reports into one pdf format ?

  Jul 29, 2017 07:02 PM|human2x|LINK

  Hi all

  I have a crystal report document called "crdReport1"

  Dim crdReport1 As New ReportDocument
  
  crdReport1.Load(Server.MapPath("~/Reports/rptSales.rpt"))
  
  dim oStream As MemoryStream = crdReport1.ExportToStream(ExportFormatType.PortableDocFormat)
      Response.Clear()
      Response.Buffer = True
      Response.ContentType = "application/pdf"
      Response.BinaryWrite(oStream.ToArray())
      Response.End()
  

  This way It works fine.

  I have another report Called "crdReport2" , I need to display it along with "crdReport1" in a single Report, showing combined pages from both reports.

  I used the the code below but it didn't work:

  Dim crdReport1 As New ReportDocument
  Dim crdReport2 As New ReportDocument
  
  crdReport1.Load(Server.MapPath("~/Reports/rptSales.rpt"))
  crdReport2.Load(Server.MapPath("~/Reports/rptPurchaces.rpt"))
  
  dim st1 As MemoryStream = crdReport1.ExportToStream(ExportFormatType.PortableDocFormat)
  dim st2 As MemoryStream = crdReport2.ExportToStream(ExportFormatType.PortableDocFormat)
      Response.Clear()
      Response.Buffer = True
      Response.ContentType = "application/pdf"
      st2.CopyTo(st1)
      Response.BinaryWrite(st1.ToArray())
      Response.End()

  It shows the first Report only.

  Any Idea. I don't to create pdf files into server.

  Thanx in advance

• • Reply
  asyed4u

  Participant

  1284 Points

  373 Posts

  Re: How to export multiple Crystal Reports into one pdf format ?

  Jul 31, 2017 10:21 AM|asyed4u|LINK

  human2x

  I don't to create pdf files into server.

  so, 

  1) create one [empty] Report and create two  details section or Required

  2) drag & drop all existing reports into this section [as sub-report]

  3) pass the all requried data & parameters  (

  cryRpt.Subreports[0].SetDataSource(YOURDATA);

• • Reply
  human2x

  Member

  28 Points

  156 Posts

  Re: How to export multiple Crystal Reports into one pdf format ?

  Aug 01, 2017 02:15 PM|human2x|LINK

  Thank you asyed4u.

  But In my case the number of reports is not fixed. It varies at run time. Sometimes , it could be 1,2,3,..... ,20

  Thats why I can't use the subreport.

  I guess merging streams it ideal in my case but It didn't work fine.

• • Reply
  asyed4u

  Participant

  1284 Points

  373 Posts

  Re: How to export multiple Crystal Reports into one pdf format ?

  Aug 02, 2017 09:23 AM|asyed4u|LINK

  Hi,

  working  sample  [ c# , using vs 2015 cm]-    [as per your point ..... no more files .in server]

  1)  crystalreports added to sample-project named as "CrystalReport1.rpt , CrystalReport2.rpt"  [ simple design]

  2)  Required Files :  ( merging streams) itext lib :  https://www.nuget.org/packages/iTextSharp   ( command ::  Install-Package iTextSharp -Version 5.5.11)

  3) Required Namespace  

  using System;
  using System.IO;
  using System.Collections.Generic;
  
  using CrystalDecisions.CrystalReports.Engine;
  using CrystalDecisions.Shared;
  
  using iTextSharp.text;
  using iTextSharp.text.pdf;

  Step  1:  Reference code 

          //reploace this event to your related event .......
          protected void Page_Load(object sender, EventArgs e)
          {
              //hold the more than one report outputs [bytes]
              List<byte[]> files = new List<byte[]>();
  
              //for testing purpose LOOP used,
              //u can change as per your requirement and your report name
              for (int i = 1; i <= 2; i++) {
  
                  ReportDocument crdReport1 = new ReportDocument();
                  
                  //put your related report names.....
                  crdReport1.Load(Server.MapPath(string.Format("CrystalReport{0}.rpt", i)));
  
                  Stream stream1 = crdReport1.ExportToStream(ExportFormatType.PortableDocFormat);
  
                  //prepare the "bytes" from "stream"               
                  files.Add(PrepareBytes(stream1));
                  //finally the result added to LIST
              }
  
              Response.Clear();
              Response.Buffer = true;
              Response.ContentType = "application/pdf";     
              
              //merge the all reports & show the reports            
              Response.BinaryWrite(MergeReports(files).ToArray());
  
              Response.End();        
          }

  Step  2:  Reference code  (credits :: https://stackoverflow.com/a/221941 )

   //prepare the report bytes
          private byte[] PrepareBytes(Stream stream)
          {          
              using (MemoryStream ms = new MemoryStream())
              {
                  byte[] buffer = new byte[stream.Length];
                  int read;
                  while ((read = stream.Read(buffer, 0, buffer.Length)) > 0)
                  {
                      ms.Write(buffer, 0, read);
                  }
                 return ms.ToArray();
              }           
          }

  Step  3:  Reference code   ( credits ::  https://stackoverflow.com/a/6780582 )

  //Merge the reports 
          private MemoryStream MergeReports(List<byte[]> files)
          {
              if (files.Count > 1)
              {
                  PdfReader pdfFile;
                  Document doc;
                  PdfWriter pCopy;
                  MemoryStream msOutput = new MemoryStream();
  
                  pdfFile = new PdfReader(files[0]);
  
                  doc = new Document();
                  pCopy = new PdfSmartCopy(doc, msOutput);
  
                  doc.Open();
  
                  for (int k = 0; k < files.Count; k++)
                  {
                      pdfFile = new PdfReader(files[k]);
                      for (int i = 1; i < pdfFile.NumberOfPages + 1; i++)
                      {
                          ((PdfSmartCopy)pCopy).AddPage(pCopy.GetImportedPage(pdfFile, i));
                      }
                      pCopy.FreeReader(pdfFile);
                  }
  
                  pdfFile.Close();
                  pCopy.Close();
                  doc.Close();
  
                  return msOutput;
              }
              else if (files.Count == 1)
              {
                  return new MemoryStream(files[0]);
              }
  
              return null;
          }

   

  so, you can change the logic in step : 1  ( as per you reports )