public ActionResult AjaxHandler(tblCuocKiemtoanParamModel param)
        {
            // Xử lý chỗ này

            IEnumerable <getCuocStatus_Result> allResult = db.getCuocStatus(param.Year, Session["date"] != null ? DateTime.Parse(Session["date"].ToString()) : DateTime.Today, string.IsNullOrEmpty(param.Status) ? "" : param.Status, (Session["donvi"] != null) ? Session["donvi"].ToString() : "");
            var filterDonVi   = string.IsNullOrEmpty(param.Donvi) ? "" : param.Donvi;
            var filterLinhVuc = string.IsNullOrEmpty(param.LinhVuc) ? "" : param.LinhVuc;

            allResult = (filterDonVi == "") ? allResult.ToList() : allResult.Where(r => r.MaDonVi == filterDonVi).ToList();
            allResult = (filterLinhVuc == "") ? allResult.ToList() : allResult.Where(r => r.linhvuc == filterLinhVuc).ToList();
            IEnumerable <getCuocStatus_Result> filteredResult;

            //Check whether the companies should be filtered by keyword
            if (!string.IsNullOrEmpty(param.sSearch))
            {
                //Optionally check whether the columns are searchable at all
                var Searchable_0 = Convert.ToBoolean(Request["bSearchable_0"]);
                var Searchable_2 = Convert.ToBoolean(Request["bSearchable_2"]);
                var Searchable_3 = Convert.ToBoolean(Request["bSearchable_3"]);
                var Searchable_4 = Convert.ToBoolean(Request["bSearchable_4"]);
                var Searchable_5 = Convert.ToBoolean(Request["bSearchable_5"]);
                int tmp          = int.TryParse(param.sSearch, out tmp) ? tmp : 0;

                filteredResult = allResult
                                 .Where(c => Searchable_2 && c.TenCuoc.ToLower().Contains(param.sSearch.ToLower()) ||
                                        Searchable_3 && c.DonVi.ToLower().Contains(param.sSearch.ToLower()) ||
                                        Searchable_4 && c.SoQuyetDinh.ToLower().Contains(param.sSearch.ToLower()) ||
                                        Searchable_5 && c.linhvuc.ToLower().Contains(param.sSearch.ToLower()) ||
                                        Searchable_0 && c.STT.Equals(tmp)
                                        );
            }
            else
            {
                filteredResult = allResult;
            }

            var Sortable_0      = Convert.ToBoolean(Request["bSortable_0"]);
            var Sortable_2      = Convert.ToBoolean(Request["bSortable_2"]);
            var Sortable_3      = Convert.ToBoolean(Request["bSortable_3"]);
            var Sortable_4      = Convert.ToBoolean(Request["bSortable_4"]);
            var Sortable_5      = Convert.ToBoolean(Request["bSortable_5"]);
            var sortColumnIndex = Convert.ToInt64(Request["iSortCol_0"]);
            Func <getCuocStatus_Result, string> orderingFunction = (c => sortColumnIndex == 2 && Sortable_2 ? c.TenCuoc :
                                                                    sortColumnIndex == 3 && Sortable_3 ? c.DonVi :
                                                                    sortColumnIndex == 4 && Sortable_4 ? c.SoQuyetDinh :
                                                                    sortColumnIndex == 5 && Sortable_5 ? c.linhvuc :
                                                                    "");
            Func <getCuocStatus_Result, Int64> orderingFunction2 = (c => sortColumnIndex == 0 && Sortable_0 ? c.STT : 0);

            var sortDirection = Request["sSortDir_0"]; // asc or desc

            if (sortDirection == "asc")
            {
                filteredResult = filteredResult.OrderBy(orderingFunction).ThenBy(orderingFunction2);
            }
            else
            {
                filteredResult = filteredResult.OrderByDescending(orderingFunction).ThenByDescending(orderingFunction2);
            }

            var displayed = filteredResult.Skip(param.iDisplayStart).Take(param.iDisplayLength);
            var result    = displayed.Select(c => new
            {
                col0 = c.STT,
                col1 = c.MaCuoc,
                col2 = c.TenCuoc,
                col3 = c.DonVi,
                col4 = c.SoQuyetDinh,
                col5 = c.linhvuc
            });

            return(Json(new
            {
                sEcho = param.sEcho,
                iTotalRecords = allResult.Count(),
                iTotalDisplayRecords = filteredResult.Count(),
                aaData = result
            }, JsonRequestBehavior.AllowGet));
        }