public IActionResult Create(ApplicationUser applicationUser)
 {
     if (ModelState.IsValid)
     {
         _context.ApplicationUser.Add(applicationUser);
         _context.SaveChanges();
         return RedirectToAction("Index");
     }
     return View(applicationUser);
 }
        public async Task<IActionResult> Register(RegisterViewModel model)
        {
            if (ModelState.IsValid)
            {
                var user = new ApplicationUser { UserName = model.Email, Email = model.Email };
                var result = await _userManager.CreateAsync(user, model.Password);
                if (result.Succeeded)
                {
                    // For more information on how to enable account confirmation and password reset please visit http://go.microsoft.com/fwlink/?LinkID=532713
                    // Send an email with this link
                    //var code = await _userManager.GenerateEmailConfirmationTokenAsync(user);
                    //var callbackUrl = Url.Action("ConfirmEmail", "Account", new { userId = user.Id, code = code }, protocol: HttpContext.Request.Scheme);
                    //await _emailSender.SendEmailAsync(model.Email, "Confirm your account",
                    //    "Please confirm your account by clicking this link: <a href=\"" + callbackUrl + "\">link</a>");
                    await _signInManager.SignInAsync(user, isPersistent: false);
                    return RedirectToAction(nameof(HomeController.Index), "Home");
                }
            }

            // If we got this far, something failed, redisplay form
            return View(model);
        }