Adding a role for user after registration in MVC 5

Question

I want to add newly registered user to a generic "User" role in my application. I am using ASP.NET Identity. My code below returns a cryptic error - Exception Details: System.Configuration.Provider.ProviderException: The role '' was not found.

Do I need to instantiate something in my account controller (role manager etc)? Here my code in the AccountController Register POST action.

 // POST: /Account/Register [HttpPost] [AllowAnonymous] [ValidateAntiForgeryToken] public async Task<ActionResult> Register(RegisterViewModel model) { if (ModelState.IsValid) { var user = new ApplicationUser() { UserName = model.UserName }; var result = await UserManager.CreateAsync(user, model.Password); var person = new Person() { UserName = user.UserName, UserId = user.Id, LastName = model.LastName, FirstName = model.FirstName, Email = model.Email, PhoneCell = model.PhoneCell }; Roles.AddUserToRole(model.UserName, "User"); if (result.Succeeded) { await SignInAsync(user, isPersistent: false); db.People.Add(person); db.SaveChanges(); return RedirectToAction("Index", "Home"); } else { AddErrors(result); } } // If we got this far, something failed, redisplay form return View(model); }

By the way, the role of "User" does exist in my ASPNetRoles table. I took the adduserinrole line of code from a previous version of the application that used SimpleMembership, and it had worked then. Roles.AddUserToRole(model.UserName, "User"); — SKale
– SKale, Commented Dec 30, 2013 at 14:27

Lin · Accepted Answer · 2013-12-30 15:22:28Z

You need to use UserManager to add role to the user. See below:

 [HttpPost] [AllowAnonymous] [ValidateAntiForgeryToken] public async Task<ActionResult> Register(RegisterViewModel model) { using (var context = new ApplicationDbContext()) { if (ModelState.IsValid) { var user = new ApplicationUser() { UserName = model.UserName }; var result = await UserManager.CreateAsync(user, model.Password); var roleStore = new RoleStore<IdentityRole>(context); var roleManager = new RoleManager<IdentityRole>(roleStore); var userStore = new UserStore<ApplicationUser>(context); var userManager = new UserManager<ApplicationUser>(userStore); userManager.AddToRole(user.Id, "User"); if (result.Succeeded) { await SignInAsync(user, isPersistent: false); return RedirectToAction("Index", "Home"); } else { AddErrors(result); } } // If we got this far, something failed, redisplay form return View(model); } }

I don't understand why this question and answer is not that popular, this answer gives the exact solution for using the default template. Thanks a lot!
one note, add the line userManger.AddToRole within the result.Secceeded. If password is not in correct format (uppercase, digits or symbols missing) it will dispose the user.Id and thus unable to add a role to a userId that is null
Oh, this worked for me too, and I was able to use it in the ManageUserRoles that had "add user to role" also. I was ready to quit MVC for good, still might, but for now the rainbow is out and birds are chirping. I'm starting to believe there is some sort of method to this madness. Thank you.
Shouldn't this code be in the if(result.Succeeded) section? As it stands a failure to register will still try to add the role to a non registered user. Also the final return View(Model) should be outside the using(var context...) as if this fails there will be a hang.
Is it necessary to instantiate roleManager? Because in the example it is not used anywhere directly.

Willy David Jr · Accepted Answer · 2020-06-05 12:27:11Z

21

If you're using the built in authentication manager and Account Controller then this will do it:

UserManager.AddToRole(user.Id, "<Role>");

edited Jun 5, 2020 at 12:27

Willy David Jr

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answered Apr 14, 2014 at 21:04

ASPCoder1450

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