oooooopppss,
Whenever i do post the question here, i found the solution before the approval. I spent a day to solve this(now may look just a 1 min work)
ExportOptions rptOptions = new ExportOptions();
PdfFormatOptions pdffprnat = new PdfFormatOptions();
pdffprnat.CreateBookmarksFromGroupTree = true;
rptOptions.ExportFormatOptions = pdffprnat;
rptOptions.ExportFormatType = ExportFormatType.PortableDocFormat;
rptOptions.ExportDestinationType=ExportDestinationType.DiskFile;
DiskFileDestinationOptions dest = new DiskFileDestinationOptions();
dest.DiskFileName=@"c:\Output.pdf";
rptOptions.ExportDestinationOptions = dest;
crReportDocument.Export(rptOptions);
now the problem is the head node come like some hexadecimal data.
Hope this will help you....
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