public List <SelectListItem> GetSelectListItemsForDropdown()
        {
            List <Student> students = studentGetway.AllStudent();

            List <SelectListItem> selectListItems = new List <SelectListItem>();

            selectListItems.Add(new SelectListItem()
            {
                Text  = "--Select--",
                Value = ""
            });
            foreach (Student student in students)
            {
                SelectListItem selectListItem = new SelectListItem();
                selectListItem.Text  = student.RegistrationNo;
                selectListItem.Value = student.Id.ToString();
                selectListItems.Add(selectListItem);
            }
            return(selectListItems);
        }