Stream streamOfPdf = MatterWIPHelper.generateSinglePDF(Generatedwip);
    //byte[] buffer = new byte[16 * 1024];
    //int read;
    //while ((read = s.Read(buffer, 0, buffer.Length)) > 0)
    //{}
   return Json(new { filename = filename, type = "application/pdf", file = streamOfPdf });