public ActionResult Index(StudentListViewModel oStudentListViewModel)
        {
            oStudentListViewModel.Sex       = oStudentListViewModel.GetSex();
            oStudentListViewModel.Countries = oStudentListViewModel.GetCountries();

            return(View(oStudentListViewModel));
        }
        public ActionResult Index()
        {
            StudentListViewModel osvm = new StudentListViewModel();

            osvm.Sex       = osvm.GetSex();
            osvm.Countries = osvm.GetCountries();
            return(View(osvm));
        }