If you want to to save the SSRS report to PDF/HTML in dynamics ax 2012 then you can try following code
SrsReportRun srsReportRun;
srsReportRun = new SrsReportRun("testReport.PrecisionDesign1");
srsReportRun.init();
srsReportRun.reportCaption("testReport.PrecisionDesign1");
srsReportRun.reportParameter("id").value("123");
srsReportRun.showDialog(false);
srsReportRun.printDestinationSettings().printMediumType(SRSPrintMediumType::File);
srsReportRun.printDestinationSettings().fileFormat(SRSReportFileFormat::PDF);
srsReportRun.printDestinationSettings().overwriteFile(true);
srsReportRun.printDestinationSettings().fileName(@"C:\testReport.pdf");
if( srsReportRun )
{
srsReportRun.executeReport();
}