MVC 5 create user using Identity 2 in synchronous way - asp.net-identity-2

Question

I'm trying to create new user and add him to selected role. I want to do it sync way, but always get stacked at point of creating in part ModelState. If I make it without ModelState then method will stack at point adminresult where is user created with UserManager. It looks like there is a problem with adding user to selected role, but I'm not sure. I'm using Identity 2. Is it possible to create user sync way or is it totally async process?
[HttpPost]
public ActionResult Create(User userViewModel, params string[] selectedRoles)
{
if (ModelState.IsValid)
{
var user = new User()
{
UserName = userViewModel.UserName,
Email = userViewModel.Email,
FirstName = userViewModel.FirstName,
LastName = userViewModel.LastName,
Password = userViewModel.Password
};
var adminresult = UserManager.Create(user, userViewModel.Password); // without using ModelState stack here
var roleStore = new RoleStore<IdentityRole>(context);
var roleManager = new RoleManager<IdentityRole>(roleStore);
var userStore = new UserStore<User>(context);
var userManager = new UserManager<User>(userStore);
var result = userManager.AddToRoles(user.Id, selectedRoles);
if (adminresult.Succeeded)
{
if (selectedRoles != null)
{
if (!result.Succeeded)
{
ModelState.AddModelError("", result.Errors.First());
// gets all names of roles to list
ViewBag.RoleId = new SelectList(RoleManager.Roles.ToList(), "Name", "Name");
return View("_Create");
}
}
return RedirectToAction("UserWizardIndex");
}
return View("_Create");
}

Answer 1

I would recommend you to use group based roles instead of giving multiple roles at login.
Your a sync will work fine in this way if single role is at login..
one thing that I saw in your code is if you have selected multiple
roles why there isn't any way to add every role against that user...
// POST: /Account/Register
[HttpPost]
[AllowAnonymous]
[ValidateAntiForgeryToken]
public async Task<ActionResult> Register(RegisterViewModel model)
{
if (ModelState.IsValid)
{
var roleManager = new RoleManager<IdentityRole>
(
new RoleStore<IdentityRole>
(
new ApplicationDbContext()
)
);
if (!roleManager.RoleExists(model.RoleName))
{
roleManager.Create(new IdentityRole(model.RoleName));
}
var user = new ApplicationUser { UserName = model.Email, Email = model.Email };
var role = Db.GetUserRoleId(model.RoleName);
var strRole = role.FirstOrDefault().ToList();
var result = await UserManager.CreateAsync(user, model.Password);
if (result.Succeeded)
{
var userInfo = new UserInformation
{
FirstName = model.FirstName,
LastName = model.LastName,
GUID = user.Id,
RoleId = model.RoleId
};
Db.UserInformations.Add(userInfo);
UserManager.AddToRoles(userInfo.GUID, model.RoleName);
await UserManager.UpdateSecurityStampAsync(user.Id);
Db.SaveChanges();
await SignInManager.SignInAsync(user, isPersistent: false, rememberBrowser: false);
// For more information on how to enable account confirmation and password reset please visit http://go.microsoft.com/fwlink/?LinkID=320771
// Send an email with this link
// string code = await UserManager.GenerateEmailConfirmationTokenAsync(user.Id);
// var callbackUrl = Url.Action("ConfirmEmail", "Account", new { userId = user.Id, code = code }, protocol: Request.Url.Scheme);
// await UserManager.SendEmailAsync(user.Id, "Confirm your account", "Please confirm your account by clicking here");
return RedirectToAction("Index", "Home");
}
AddErrors(result);
}
// If we got this far, something failed, redisplay form
return View(model);
}