public List <SelectListItem> GetAllExamSlItems()
        {
            var exams   = _batchManager.GetAllExams();
            var slItems = new List <SelectListItem>();

            foreach (var exam in exams)
            {
                var sli = new SelectListItem();
                sli.Text  = exam.Code + " - " + exam.Topic;
                sli.Value = exam.Id.ToString();
                slItems.Add(sli);
            }

            return(slItems);
        }