public ActionResult Enroll()
        {
            var classList = classesManager.GetAllClasses
                            .Select(t => new Models.ClassesModel(t.Id, t.Name, t.Description, t.Price))
                            .ToArray();
            var model = new AllClassesModel {
                AllClasses = classList
            };

            return(View(model));
        }
        public ActionResult Enroll(AllClassesModel classesName)
        {
            var userGet = (EducationWebsite.Models.UserModel)Session["User"];
            var user    = DatabaseAccessor.Instance.User
                          .FirstOrDefault(t => t.UserId == userGet.Id);

            var classes = DatabaseAccessor.Instance.Class
                          .FirstOrDefault(t => t.ClassName == classesName.SelectedClass);

            user.Class.Add(classes);

            DatabaseAccessor.Instance.SaveChanges();


            return(Redirect("/Home/CurrentEnrolledClasses"));
        }