Duplex printing in reporting services

Question

I have been working on this problem for days. I have a report that is grouped
and will be printed duplex (front and back). There is a page break after each
group. I want to ensure that the start of a new group does not end up printed
on the back side of an old group. For example:
Page 1 (printed on front side of paper): group 1
Page 2 (printed on back side of paper): more group 1
Page 3 (printed on front side of paper): more group 1
Page 4 (printed on on back side of paper): group 2  <--- This is a problem
I need:
Page 1 (front side): group 1
Page 2 (back side): more group 1
Page 3 (front side): more group 1
Page 4 (back side): <This Page Intentionally Left Blank>
Page 5 (front side): group 2
Issues that I've run into include the fact that SSRS renders the entire body
first, before rendering the header/footer. This prevents the body of the
report from knowing which page it will end up on when it is rendered (and is
also why you cannot reference Globals!PageNumber from the body).
The restriction above also prevents using a variable in custom code to know
when to generate a page break. If you set this variable in the header/footer
then the body will never see it as the entire body is rendered first and will
therefore only see the initial state of the variable.
I have seen this issue posted in a number of places,
but no one ever has a solution to this (except switching back to
Crystal Reports).  Have any MVPs ever addressed this issue?  I am
really hoping someone can offer a good solution or work-around.

Answer 1

  string showHideToggle = null;
  string encoding;
  string mimeType;
  string extension;
  Warning[] warnings = null;
  ParameterValue[] reportHistoryParameters = null;
  string[] streamIDs = null;
  ExecutionInfo execInfo = new ExecutionInfo();
  ExecutionHeader execHeader = new ExecutionHeader();
  rs.ExecutionHeaderValue = execHeader;
  execInfo = rs.LoadReport(reportPath, historyID);
  String SessionId = rs.ExecutionHeaderValue.ExecutionID;
  rs.Timeout = System.Threading.Timeout.Infinite; // disable timeouts
  // loop through each of the Payees and generate the individual file
  DataSet dsPayees = db.ExecuteDataSet("spMainReport", null,
      paymentCycleID); 
  // determine what the LAST Payee ID will be so that we can print the report footer
  DataRow r = dsPayees.Tables[0].Rows[dsPayees.Tables[0].Rows.Count - 1];
  string lastPayee = r["uPayeeID"].ToString();
  //Render each original PDF document for each Payee and add it to the output document
  PdfDocument originalDocument = new PdfDocument();
  PdfDocument outputDocument = new PdfDocument();
  PdfPage page = null;
  foreach (DataRow row in dsPayees.Tables[0].Rows)
      // set the Display Footer parameter to true if this is the last row
      if (row["uPayeeID"].ToString() == lastPayee)
          parameters[24].Value = "true";  //DisplayReportFooter
      //Render the report for a single Payee
      parameters[21].Value = row["uPayeeID"].ToString();
      parameters[25].Value = row["uPayeeName"].ToString();
      rs.SetExecutionParameters(parameters, culture);
      result = rs.Render(format, devInfo, out extension, out encoding, out mimeType, out warnings, out streamIDs);
      // Write the contents of the report to a document as a Stream.
      Stream s = new MemoryStream(result);
      originalDocument = PdfReader.Open(s, PdfDocumentOpenMode.Import);
      // Iterate pages to the output document
      int cnt = originalDocument.PageCount;
      for (int idx = 0; idx < cnt; idx++)
        // Get the page from the original report and add it to the output document.
        page = originalDocument.Pages[idx];
        outputDocument.AddPage(page);
      //if the last page of the document is on an odd page, remove it if it is a blank page
      if ((outputDocument.PageCount + 1 & 1) == 0)
        string pageContents = page.Contents.CreateSingleContent().Stream.ToString();
        if (pageContents.IndexOf("page intentionally left blank") > 0)
            // we're on an odd page number and it's blank - this is no good for Duplex printing - so
            // delete the preceeding (blank) page from the output document
            outputDocument.Pages.RemoveAt(outputDocument.PageCount - 1);
      // after each Payee, we need to update the running page number totals
      parameters[22].Value = Convert.ToString(Convert.ToInt32(outputDocument.Pages.Count));
      // Display Header parameter to false
      parameters[23].Value = "false";
  if (outputDocument.PageCount > 0)
      // Save the document
      outputDocument.Save(fileServer + @"\RemitDent" +
        paymentCycleID.ToString() + ".pdf");
  return;