//GetExistingUploadMediaDetails
 public ActionResult Export(DateTime? StartDate, DateTime? EndDate, string PortfolioOwner, string Responsibility, string Account, string GUID)
 {
     Response.AddHeader("Content-Type", "application/vnd.ms-excel");
     var dataQueries = new DataQueries();
     IEnumerable<MediaViewEditResult> results = dataQueries.GetMediaViewEditRecordsExport(StartDate, EndDate, PortfolioOwner, Responsibility, Account, GUID);
     //return View();
     return PartialView("Export", results.ToList());
 }