public ActionResult CreateTeacher(string teacherFName, string teacherLName, string empNumber, string salary, string teacherid = null, string hireDate = null)
        {
            Teacher newTeacher = new Teacher
            {
                teacherFname   = teacherFName,
                teacherLname   = teacherLName,
                employeeNumber = empNumber,
                salary         = salary,
                hireDate       = DateTime.Parse(hireDate)
            };
            TeacherDataController controller = new TeacherDataController();

            controller.CreateTeacher(newTeacher);
            return(RedirectToAction("Filter"));
        }