// GET: Sales
        public ActionResult Index()
        {
            List <PieSeriesData> pieData = new List <PieSeriesData>();
            int currentMonth             = DateTime.Today.Month;
            int currentYear = DateTime.Today.Year;

            ViewData["pieData"] = GetSaleData(currentMonth, currentYear, "");

            GetDataList();
            FilterSale filterSale = new FilterSale(currentMonth, currentYear, "");

            return(View(filterSale));
        }
        public ActionResult Index(int?SelectedMonth, int?SelectedYear, string SelectedCategory)
        {
            int getMonth, getYear;

            getMonth = SelectedMonth.GetValueOrDefault();
            getYear  = SelectedYear.GetValueOrDefault();

            List <PieSeriesData> pieData    = new List <PieSeriesData>();
            FilterSale           filterSale = new FilterSale(getMonth, getYear, SelectedCategory);

            GetDataList();

            ViewData["pieData"] = GetSaleData(getMonth, getYear, SelectedCategory);

            return(View(filterSale));
        }