public ActionResult UpdateTeacher(int id)
        {
            TeacherDataController controller = new TeacherDataController();
            Teacher newTeacher = controller.FindTeacher(id);

            return(View(newTeacher));
        }
        // GET: Teacher/Show/{id}
        public ActionResult Show(int id)
        {
            TeacherDataController controller = new TeacherDataController();
            Teacher newTeacher = controller.FindTeacher(id);

            Classes NewSearchClass = new Classes
            {
                employeeNumber = Convert.ToString(newTeacher.employeeNumber)
            };

            ClassesDataController class_controller = new ClassesDataController();
            IEnumerable <Classes> filterClasses    = class_controller.FilterClasses(NewSearchClass);

            TeacherClass newTeacherClass = new TeacherClass
            {
                classes = filterClasses,
                teacher = newTeacher
            };

            return(View(newTeacherClass));
        }