替换 IdentityConfig 中的 ApplicationDbContext

Question

我在上下文或ApplicationDbContext方面有问题，这是由ASP Identity生成的，我在IdentityConfig中将其替换为IdentityDbContext。调试时：

var manager = new ApplicationUserManager(new UserStore<ApplicationUser>(context.Get<IdentityDbContext>()));

它返回：

System.ArgumentNullException 發生

重要文件：

IdentityDbContext.cs

using Microsoft.AspNet.Identity.EntityFramework;
using System;
using System.Collections.Generic;
using System.Data.Entity;
using System.Linq;
using System.Web;
using TaskApplication.Models;
namespace TaskApplication.DAL
{
    public class IdentityDbContext : DbContext
    {
        public IdentityDbContext()
            : base("DefaultConnection")
        {
        }
        public static IdentityDbContext Create()
        {
            return new IdentityDbContext();
        }
    }
}

身份配置.cs

using System;
using System.Collections.Generic;
using System.Data.Entity;
using System.Linq;
using System.Security.Claims;
using System.Threading.Tasks;
using System.Web;
using Microsoft.AspNet.Identity;
using Microsoft.AspNet.Identity.EntityFramework;
using Microsoft.AspNet.Identity.Owin;
using Microsoft.Owin;
using Microsoft.Owin.Security;
using TaskApplication.Models;
namespace TaskApplication
{
    // Configure the application user manager used in this application. UserManager is defined in ASP.NET Identity and is used by the application.
    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<IdentityDbContext>()));
            //var manager = new ApplicationUserManager(new UserStore<ApplicationUser>(new IdentityDbContext("DefaultConnection")));
            // Configure validation logic for usernames
            manager.UserValidator = new UserValidator<ApplicationUser>(manager)
            {
                AllowOnlyAlphanumericUserNames = false,
                RequireUniqueEmail = true
            };
            // Configure validation logic for passwords
            manager.PasswordValidator = new PasswordValidator
            {
                RequiredLength = 6,
                RequireNonLetterOrDigit = true,
                RequireDigit = true,
                RequireLowercase = true,
                RequireUppercase = true,
            };
            // Configure user lockout defaults
            manager.UserLockoutEnabledByDefault = true;
            manager.DefaultAccountLockoutTimeSpan = TimeSpan.FromMinutes(5);
            manager.MaxFailedAccessAttemptsBeforeLockout = 5;
            // Register two factor authentication providers. This application uses Phone and Emails as a step of receiving a code for verifying the user
            // You can write your own provider and plug it in here.
            manager.RegisterTwoFactorProvider("Phone Code", new PhoneNumberTokenProvider<ApplicationUser>
            {
                MessageFormat = "Your security code is {0}"
            });
            manager.RegisterTwoFactorProvider("Email Code", new EmailTokenProvider<ApplicationUser>
            {
                Subject = "Security Code",
                BodyFormat = "Your security code is {0}"
            });
            manager.EmailService = new EmailService();
            manager.SmsService = new SmsService();
            var dataProtectionProvider = options.DataProtectionProvider;
            if (dataProtectionProvider != null)
            {
                manager.UserTokenProvider = 
                    new DataProtectorTokenProvider<ApplicationUser>(dataProtectionProvider.Create("ASP.NET Identity"));
            }
            return manager;
        }
    }
    // Configure the application sign-in manager which is used in this application.
    public class ApplicationSignInManager : SignInManager<ApplicationUser, string>
    {
        public ApplicationSignInManager(ApplicationUserManager userManager, IAuthenticationManager authenticationManager)
            : base(userManager, authenticationManager)
        {
        }
        public override Task<ClaimsIdentity> CreateUserIdentityAsync(ApplicationUser user)
        {
            return user.GenerateUserIdentityAsync((ApplicationUserManager)UserManager);
        }
        public static ApplicationSignInManager Create(IdentityFactoryOptions<ApplicationSignInManager> options, IOwinContext context)
        {
            return new ApplicationSignInManager(context.GetUserManager<ApplicationUserManager>(), context.Authentication);
        }
    }
}

顺便说一句。我正在遵循本教程

Answer 1

将上面的注释复制到格式化的答案中...

马尔钦克鲁帕：

好。我自己解决了我的问题。我刚刚添加到 IdentityConfig.cs使用我的 Db 上下文文件夹，我更改了

var manager = new ApplicationUserManager(
    new UserStore<ApplicationUser>(context.Get<IdentityDbContext>())); 

自

var manager = new ApplicationUserManager(
    new UserStore<ApplicationUser>(context.Get<DAL.IdentityDbContext>()));

在前面的代码中，IdentityDbContext使用了错误的类，仅此而已。