I try to concatenate 2 PDF data from rdlc report.
The problem is the result is blank pages.
I don't know why, could someone help me please.
here is my code:
Code:
private ActionResult ConcatPdf(byte[] pdfData1, byte[] pdfData2)
{
MemoryStream ms1 = new MemoryStream(pdfData1);
MemoryStream ms2 = new MemoryStream(pdfData2);
PdfDocument inputDoc1 = PdfReader.Open(ms1, PdfDocumentOpenMode.Import);
PdfDocument inputDoc2 = PdfReader.Open(ms2, PdfDocumentOpenMode.Import);
PdfDocument outputDoc = new PdfDocument();
foreach (PdfPage page in inputDoc1.Pages)
{
outputDoc.AddPage(page);
}
foreach (PdfPage page in inputDoc2.Pages)
{
outputDoc.AddPage(page);
}
MemoryStream outputMs = new MemoryStream();
outputDoc.Save(outputMs);
return File(outputMs.ToArray(), "application/pdf");
}
In generate report function look like this:
Code:
public ActionResult TestPDF(int id)
{
// Set report path.
LocalReport rep = viewer.LocalReport;
rep.ReportPath = Server.MapPath("~/Reports/rptExternalTransferIndividual.rdlc");
rep.DataSources.Clear();
//
// Set data and parameter to report.
//
...
...
return ConcatPdf(viewer.LocalReport.Render("PDF"), viewer.LocalReport.Render("PDF"));
}
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