// GET: Students/CreateWizard
        public IActionResult CreateStep1()
        {
            var listUsers_email = _context.Users
                                  .Where(p => p.Lastname != "").OrderBy(c => c.Email)
                                  .Select(x => new UserEmailItem {
                Id = x.Id, Email = x.Email
            }).ToList();

            var listUsers_NoStudent = new List <UserEmailItem>();

            foreach (var user_email in listUsers_email)
            {
                var studtest = _context.Students
                               .Include(x => x.User)
                               .SingleOrDefault(x => x.User.Id == user_email.Id);
                if (studtest == null)
                {
                    listUsers_NoStudent.Add(user_email);
                }
            }
            //ViewBag.ListUsers_Email = listUsers_email;

            var model = new StudentCreateStep1_ViewModel();

            model.ListUsers_Email = listUsers_NoStudent;
            return(View(model));

            //var email = "*****@*****.**";
            //return RedirectToAction("Create", "Students", new { user_email = email });
        }
        public IActionResult CreateStep1(StudentCreateStep1_ViewModel student_step1)
        {
            var user_id = student_step1.SelectedUserId;

            if ((user_id == "") || (user_id == null))
            {
                return(NotFound());
            }
            return(RedirectToAction("CreateStep2", "Students", new { user_id = user_id }));
        }