public async Task <IActionResult> Edit(string id, StudentViewModel svm)
        {
            StudentAppUserViewModel svm_user = svm.User;

            if (id != svm.Studentnumber)
            {
                return(NotFound());
            }

            if (ModelState.IsValid)
            {
                Student student = await CopyToStudent(svm, svm.Studentnumber);

                if (student == null)
                {
                    return(NotFound());
                }

                try {
                    _context.Update(student.User);
                    await _context.SaveChangesAsync();
                }
                catch (DbUpdateConcurrencyException) {
                    if (!ApplicationUserExists(student.User.Id))
                    {
                        return(NotFound());
                    }
                    else
                    {
                        throw;
                    }
                }

                try {
                    _context.Update(student);
                    await _context.SaveChangesAsync();
                }
                catch (DbUpdateConcurrencyException) {
                    if (!StudentExists(student.Studentnumber))
                    {
                        return(NotFound());
                    }
                    else
                    {
                        throw;
                    }
                }
                return(RedirectToAction("Index"));
            }
            return(View(svm));
        }
        public async Task <IActionResult> CreateStep2(StudentViewModel svm)
        {
            StudentAppUserViewModel svm_user = svm.User;

            if ((svm_user.Email == "") || (svm_user.Email == null))
            {
                return(NotFound());
            }
            ;
            if ((svm.Studentnumber == "") || (svm.Studentnumber == null))
            {
                return(NotFound());
            }

            if (ModelState.IsValid)
            {
                Student student = _context.Students.Where(b => b.Studentnumber == svm.Studentnumber).FirstOrDefault();
                if (student == null)
                {
                    student = await CopyToNewStudent(svm, svm.User.Email);

                    student.Studentnumber = svm.Studentnumber;
                    _context.Update(student.User);
                    await _context.SaveChangesAsync();

                    _context.Add(student);
                }
                else
                {
                    _context.Update(student.User);
                    await _context.SaveChangesAsync();

                    _context.Update(student);
                }

                await _context.SaveChangesAsync();

                return(RedirectToAction("Index"));
            }
            return(View(svm));
        }