public ActionResult FilterCompletedRequests(int page, int pageSize, int number, DateTime?fromDate, DateTime?toDate)
        {
            ViewBag.Label = "completed";
            ViewBag.page  = page;

            var requests = _rep.GetCompletedRequests(page, pageSize, number, fromDate, toDate);

            return(PartialView("Requests", requests));
        }