public ActionResult RegisterStudent(Student aStudent)
        {
            //aStudent.RegistrationDate = Convert.ToDateTime(aStudent.Date);
            List <Department> aDepartments       = aDepartmentManager.GetAllDepartment();
            string            aDepartmentsbyCode = aDepartmentManager.GetAllDepartmentbyId(aStudent.DepartmentId);

            ViewBag.Departmentlist = aDepartments;

            string regno = aDepartmentsbyCode + "-";

            regno += aStudent.RegistrationDate.Year.ToString();
            regno += "-";
            int regNoId = aStudentManager.GetRowCount(regno);

            //string s = (regNoId + 1).ToString("000");
            if (regNoId == 0)
            {
                regno += "00" + 1;
            }
            else
            {
                if (regNoId >= 1 && regNoId <= 9)
                {
                    int temp = regNoId + 1;
                    regno += "00" + temp;
                }
                else if (regNoId >= 10 && regNoId <= 99)
                {
                    int temp = regNoId + 1;
                    regno += "0" + temp;
                }
                else
                {
                    regno += "" + regNoId + 1;
                }
            }
            aStudent.RegistrationNumber = regno;



            string saveStudent = aStudentManager.SaveStudent(aStudent);

            ViewBag.message = saveStudent;
            return(View());
        }