CODEWITHSUNDEEP
c#asp.net-mvc-5asp.net-identity
Chaim Eliyah
Chaim Eliyah

Reputation: 2942

FindAsync returns null despite UserManager extension method

I'm currently working from this excellent guide for the purpose of migrating an existing web app that uses SQL Membership authentication to ASP.NET Identity authentication:

http://www.asp.net/identity/overview/migrations/migrating-an-existing-website-from-sql-membership-to-aspnet-identity

With the difference being that I am not using a Web Forms project, so I've adapted it to work with an MVC 5 project. Here's my UserManager class, which is supposed to check for SQL Membership passwords and update them when necessary (see link above for details):

public class MyUserManager : UserManager<ApplicationUser>
{
    public MyUserManager()
        : base(new UserStore<ApplicationUser>(new ApplicationDbContext()))
    {
        this.PasswordHasher = new SQLPasswordHasher();
    }
    public class SQLPasswordHasher : PasswordHasher
    {
        public override string HashPassword(string password)
        {
            return base.HashPassword(password);
        }

        public override PasswordVerificationResult VerifyHashedPassword(string hashedPassword, string providedPassword)
        {
            string[] passwordProperties = hashedPassword.Split('|');
[SNIP]

The problem is that the /Account/Login method does not seem to use the PasswordHasher extension. Here's the code (straight from the MVC 5 template, though the UserManager object is an instance of the MyUserManager class above):

    public async Task<ActionResult> Login(LoginViewModel model, string returnUrl)
    {
        if (ModelState.IsValid)
        {
            var user = await UserManager.FindAsync(model.UserName, model.Password);
            if (user != null)
            {
                await SignInAsync(user, model.RememberMe);
                return RedirectToLocal(returnUrl);
            }
            else
            {
                ModelState.AddModelError("", "Invalid username or password.");
[SNIP]

It won't authenticate. I imagine I'm not the only one trying to make this work. Any pointers? For MVC 5, do I need to write a different extension?

Thanks for any help you can provide.

Upvotes: 1

Views: 10684

Answers (1)

Chaim Eliyah
Chaim Eliyah

Reputation: 2942

Here is the way this should be set up for a new MVC 5 project:

IdentityModels.cs

public class ApplicationDbContext : IdentityDbContext<ApplicationUser>
{
    public ApplicationDbContext()
        : base("ApplicationServices")
    {
    }
}

public class MyUserManager : UserManager<ApplicationUser>
{
    public MyUserManager()
        : base(new UserStore<ApplicationUser>(new ApplicationDbContext()))
    {
        this.PasswordHasher = new SQLPasswordHasher();
    }
    public class SQLPasswordHasher : PasswordHasher
[etc.]

The SQLPasswordHasher code can be found here.

AccountController.cs

public class AccountController : Controller
{
    public AccountController()
        : this(new MyUserManager())
    {
    }

    public AccountController(MyUserManager userManager)
    {
        UserManager = userManager;
    }

    public MyUserManager UserManager { get; private set; }

[etc.]

The rest is exactly as it appears on the blog mentioned above and/or as it appears in the default MVC 5 template. Once hooked up to a context with SQL Membership info, it works like a charm. Hope this helps.

Upvotes: 3

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