public ActionResult FilePartial(IEnumerable <int> fileid) { var filesToShow = TempData["list"] as List <PDFfile>; Comparer c = new Comparer(); if (filesToShow.Count() == 2) { c.CompareTwoPDF(filesToShow[0].PDFID, filesToShow[1].PDFID); } TempData.Keep(); return(View(filesToShow)); }