public ActionResult Kategorie(int id, int?page, string sortOrder, string searchString, string currentFilter)
        {
            if (Session["ID"] != null)
            {
                int uID = Convert.ToInt32(Session["ID"]);
                displayAdsRepository.LoggedUser = advertRepository.GetUserData(uID);
                displayAdsRepository.FavUsera   = advertRepository.GetUserFav(uID);
            }
            if (id == 1 || id >= 29 && id <= 995)
            {
                return(RedirectToAction("Wyszukiwanie", "Home"));
            }
            else
            {
                ViewBag.CurrentSort   = sortOrder;
                ViewBag.NameSortParm  = sortOrder == "name" ? "name_desc" : "name";
                ViewBag.DateSortParm  = sortOrder == "Date" ? "date_desc" : "Date";
                ViewBag.PriceSortParm = sortOrder == "Price" ? "Price_desc" : "Price";
                if (searchString != null)
                {
                    page = 1;
                }
                else if (searchString == null)
                {
                    searchString = currentFilter;
                }
                else
                {
                    searchString = currentFilter;
                }

                ViewBag.CurrentFilter = searchString;
                var adverts = db.ADVERTS.Where(a => a.CATEGORY == id);
                if (id == 999)
                {
                    adverts = db.ADVERTS.Where(a => a.CATEGORY >= 2 && a.CATEGORY <= 9);
                }
                else if (id == 998)
                {
                    adverts = db.ADVERTS.Where(a => a.CATEGORY >= 10 && a.CATEGORY <= 15);
                }
                else if (id == 997)
                {
                    adverts = db.ADVERTS.Where(a => a.CATEGORY >= 16 && a.CATEGORY <= 21);
                }
                else if (id == 996)
                {
                    adverts = db.ADVERTS.Where(a => a.CATEGORY >= 22 && a.CATEGORY <= 28);
                }
                else
                {
                    adverts = db.ADVERTS.Where(a => a.CATEGORY == id);
                }


                if (!String.IsNullOrEmpty(searchString))
                {
                    adverts = adverts.Where(s => s.IS_ARCHIVED == false && s.IS_HIDDEN == false && ((s.TITLE.Contains(searchString)) ||
                                                                                                    (s.DESCRIPTION.Contains(searchString))));
                }
                else if (String.IsNullOrEmpty(searchString))
                {
                    adverts = adverts.Where(s => s.IS_ARCHIVED == false);
                }
                switch (sortOrder)
                {
                case "name_desc":
                    adverts = adverts.OrderByDescending(s => s.TITLE);
                    break;

                case "name":
                    adverts = adverts.OrderBy(s => s.TITLE);
                    break;

                case "Price":
                    adverts = adverts.OrderBy(s => s.PRICE);
                    break;

                case "Price_desc":
                    adverts = adverts.OrderByDescending(s => s.PRICE);
                    break;

                case "Date":
                    adverts = adverts.OrderBy(s => s.DATE);
                    break;

                case "date_desc":
                    adverts = adverts.OrderByDescending(s => s.DATE);
                    break;

                default:
                    adverts = adverts.OrderByDescending(s => s.DATE);
                    break;
                }
                int pageSize   = 10;
                int pageNumber = (page ?? 1);
                ViewBag.id = id;
                //return View(adverts.ToPagedList(pageNumber, pageSize));
                displayAdsRepository.ADVERTS = adverts.ToPagedList(pageNumber, pageSize);
                displayAdsRepository.IMAGES  = new AdvertRepository().GetAdsImages().ToList();
                return(View(displayAdsRepository));
            }
        }
        public ActionResult Wyszukiwanie(int?page, string search, string sortOrder, string currentFilter)
        {
            if (Session["ID"] != null)
            {
                int uID = Convert.ToInt32(Session["ID"]);
                displayAdsRepository.LoggedUser = advertRepository.GetUserData(uID);
                displayAdsRepository.FavUsera   = advertRepository.GetUserFav(uID);
            }
            ViewBag.CurrentSort   = sortOrder;
            ViewBag.NameSortParm  = sortOrder == "name" ? "name_desc" : "name";
            ViewBag.DateSortParm  = sortOrder == "Date" ? "date_desc" : "Date";
            ViewBag.PriceSortParm = sortOrder == "Price" ? "Price_desc" : "Price";
            if (search != null)
            {
                page = 1;
            }
            else
            {
                search = currentFilter;
            }
            ViewBag.CurrentFilter = search;
            var adverts = db.ADVERTS.Where(x => x.IS_ARCHIVED == false);

            if (!String.IsNullOrEmpty(search))
            {
                adverts = adverts.Where(s => s.IS_ARCHIVED == false && ((s.TITLE.Contains(search)) || (s.DESCRIPTION.Contains(search))));
            }
            else if (String.IsNullOrEmpty(search))
            {
                adverts = adverts.Where(s => s.IS_ARCHIVED == false);
            }
            switch (sortOrder)
            {
            case "name_desc":
                adverts = adverts.OrderByDescending(s => s.TITLE);
                break;

            case "name":
                adverts = adverts.OrderBy(s => s.TITLE);
                break;

            case "Price":
                adverts = adverts.OrderBy(s => s.PRICE);
                break;

            case "Price_desc":
                adverts = adverts.OrderByDescending(s => s.PRICE);
                break;

            case "Date":
                adverts = adverts.OrderBy(s => s.DATE);
                break;

            case "date_desc":
                adverts = adverts.OrderByDescending(s => s.DATE);
                break;

            default:
                adverts = adverts.OrderByDescending(s => s.DATE);
                break;
            }
            int pageSize   = 10;
            int pageNumber = (page ?? 1);

            displayAdsRepository.ADVERTS = adverts.ToPagedList(pageNumber, pageSize);
            displayAdsRepository.IMAGES  = new AdvertRepository().GetAdsImages().ToList();;
            return(View(displayAdsRepository));
        }