aspnet Identity中在哪里配置applicationUserManager和角色管理器

Question

首先，我使用了 AspNet Identity Sample - 通过包管理器控制台预先安装，但 razor 文件不匹配，因此 intellisense 停止在视图页面上工作。

所以，我选择逐步手动放置所有代码文件，并在它们出现时解决丢失问题。所以，我的 App_Start 文件夹中有一个 identityConfig.cs 文件，如下所示----

   public class IdentityConfig
   {
    public class ApplicationUserManager : UserManager<ApplicationUser>
     {
        public ApplicationUserManager(IUserStore<ApplicationUser> store)
            : base(store)
        {
        }
       public static ApplicationUserManager Create(IdentityFactoryOptions<ApplicationUserManager> options,
            IOwinContext context)
        {
            var manager = new ApplicationUserManager(new UserStore<ApplicationUser>(context.Get<ApplicationDbContext>()));
            // Configure validation logic for usernames
            manager.UserValidator = new UserValidator<ApplicationUser>(manager)
            {
                AllowOnlyAlphanumericUserNames = false,
                RequireUniqueEmail = true
            };

在我的帐户控制器中，我有这样的代码--------

   public class AccountController : Controller
{
    public AccountController()
    {
    }

    public AccountController(IdentityConfig.ApplicationUserManager userManager, IdentityConfig.ApplicationSignInManager signInManager)
    {
        UserManager = userManager;
        SignInManager = signInManager;
    }

    private IdentityConfig.ApplicationUserManager _userManager;
    public IdentityConfig.ApplicationUserManager UserManager
    {
        get
        {
            return _userManager ?? HttpContext.GetOwinContext().GetUserManager<IdentityConfig.ApplicationUserManager>();
        }
        private set
        {
            _userManager = value;
        }
    }

现在，我在注册操作方法中遇到错误------

      public async Task<ActionResult> Register(RegisterViewModel model)
    {
        if (ModelState.IsValid)
        {
            var user = new ApplicationUser
            {
                UserName = model.Email,
                Email = model.Email
            };

            var result = await UserManager.CreateAsync(user, model.Password);

            //  await UserManager.SetTwoFactorEnabledAsync(user.Id, true);

            if (result.Succeeded)
            {
                return await GenerateEmailConfirmation(user);
            }
            AddErrors(result);
        }

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

在这里，如您所见，在第六行，它在第 --------

行给出 System.NullReferenceException

   var result = await UserManager.CreateAsync(user, model.Password);

我已经尝试调试它，在我的本地 window，它正在传递正确填充数据库所需的所有内容，但只有这个结果变量是 null.also， _signInManager、userManager 和 SignInManager 以及 USerManager 在本地 window.

中都显示为空

我缺少的 problem.What 是什么。请告诉我。这个 UserMAnager class.I 不知道有什么关系。

Answer 1

确保在启动时创建了它们 class:

public partial class Startup
{
    public void ConfigureAuth(IAppBuilder app)
    {
        // Configure the db context, user manager and signin manager to use a single instance per request
        app.CreatePerOwinContext(ApplicationDbContext.Create);
        app.CreatePerOwinContext<ApplicationUserManager>(ApplicationUserManager.Create);
        app.CreatePerOwinContext<ApplicationSignInManager>(ApplicationSignInManager.Create);

        ...
    }
}

aspnet Identity中在哪里配置applicationUserManager和角色管理器

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