扩展Roles表后，实体类型IdentityRole不是当前上下文的模型的一部分

我将由实体框架创建的AspNetRoles扩展为如下所示：

public class AspNetRoles:IdentityRole
{
        public AspNetRoles() : base() { }
        public String Label { get; set; }
        public String ApplicationId { get; set; }
        public AspNetApplications Application { get; set; }

        public static readonly String SystemAdministrator = "SystemAdministrator";
}

我知道，因为我已经扩展了identityrole表，所以必须对usermanager进行更改。这是我所做的：

public class ApplicationUserManager : UserManager
{
    public ApplicationUserManager(IUserStore store)
        : base(store)
    {
    }

    public static ApplicationUserManager Create(IdentityFactoryOptions options, IOwinContext context) 
    {
        var manager = new ApplicationUserManager(new UserStore(context.Get()));
        // Configure validation logic for usernames
        manager.UserValidator = new UserValidator(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
        {
            MessageFormat = "Your security code is {0}"
        });
        manager.RegisterTwoFactorProvider("Email Code", new EmailTokenProvider
        {
            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(dataProtectionProvider.Create("ASP.NET Identity"));
        }
        return manager;
    }
}

// Configure the application sign-in manager which is used in this application.
public class ApplicationSignInManager : SignInManager
{
    public ApplicationSignInManager(ApplicationUserManager userManager, IAuthenticationManager authenticationManager)
        : base(userManager, authenticationManager)
    {
    }

    public override Task CreateUserIdentityAsync(ApplicationUser user)
    {
        return user.GenerateUserIdentityAsync((ApplicationUserManager)UserManager);
    }

    public static ApplicationSignInManager Create(IdentityFactoryOptions options, IOwinContext context)
    {
        return new ApplicationSignInManager(context.GetUserManager(), context.Authentication);
    }
}

public class ApplicationRoleManager : RoleManager, IDisposable
{
    public ApplicationRoleManager(RoleStore store) : base(store)
    { }


    public static ApplicationRoleManager Create(IdentityFactoryOptions options, IOwinContext context)
    {
        //AppIdentityDbContext db = context.Get();
        //AppRoleManager manager = new AppRoleManager(new RoleStore(db));
        return new ApplicationRoleManager(new RoleStore(context.Get()));

        //return manager;
    }
}

public class ApplicationUserStore : UserStore, IUserStore, IUserStore, IDisposable where TUser : IdentityUser
{
    public ApplicationUserStore(DbContext context) : base(context) { }
}

这是我的DBContext：

public class ApplicationDbContext : IdentityDbContext
    {
        public virtual DbSet AspNetUsersExtendedDetails { get; set; }
        public virtual DbSet AspNetApplications { get; set; }
        public virtual DbSet AspNetEventLogs { get; set; }
        public ApplicationDbContext() : base("AppStudio")
        {

        }
        public static ApplicationDbContext Create()
        {
            return new ApplicationDbContext();
        }
    }

但是，在启动应用程序时出现此错误：

实体类型IdentityRole不是当前上下文模型的一部分。

我不确定为什么会这样。扩展角色表后，我是否错过了需要更改的内容？

简短答案

上面代码中的主要问题在于的Create方法UserManager。在该方法中，您应该创建一个UserManager使用，UserStore它可以识别您创建的新角色类。为此，您可以使用拥有的ApplicationUserStore类的实例，或通过以下方式创建新的用户存储：

new UserStore())

如何向IdentityRole添加自定义属性？

要将新属性添加到IdentityRole，您可以按照以下步骤操作：

创建一个ASP.NET Web应用程序

确保选择“ MVC”，并且“ 身份验证”是“ 个人用户帐户”

转到模型文件夹？打开IdentityModels.cs并创建包含要添加的自定义属性的ApplicationRole类：

public class ApplicationRole : IdentityRole   //My custom role class
{
    public string ApplicationId { get; set; } //My custom property
}

更改类型为的参数的接受GenerateUserIdentityAsync方法：ApplicationUserUserManager

public class ApplicationUser : IdentityUser
{
    public async Task GenerateUserIdentityAsync(UserManager manager)
    {

更改ApplicationDbContext基类并引入所有通用参数：

public class ApplicationDbContext : IdentityDbContext
{
    public ApplicationDbContext()
        : base("DefaultConnection")
    {

生成项目。

转到“ 工具”菜单？Nuget软件包管理器？单击程序包管理器控制台

键入Enable-Migrations并按Enter，直到任务完成。

键入Add-Migration "ApplicationRole"并按Enter，直到任务完成。

键入Update-Database并按Enter，直到任务完成。

转到App_Start文件夹？打开IdentityConfig.cs并更改ApplicationUserManager要从UserManager其派生的类 ，还更改其Create方法以返回以下UserManage信息ApplicationRole：

public class ApplicationUserManager : UserManager
{
    public ApplicationUserManager(IUserStore store)
        : base(store)
    {
    }

    public static ApplicationUserManager Create(IdentityFactoryOptions options, IOwinContext context)
    {
        var manager = new ApplicationUserManager(new UserStore(context.Get()));

要管理角色，请ApplicationRoleManager在同一文件中创建类：

public class ApplicationRoleManager : RoleManager
{
    public ApplicationRoleManager(IRoleStore store) : base(store) { }

    public static ApplicationRoleManager Create(
        IdentityFactoryOptions options,
        IOwinContext context)
    {
        return new ApplicationRoleManager(new RoleStore(context.Get()));
    }
}

转到App_Start文件夹？打开Startup.Auth.cs并将以下代码添加到ConfigureAuth方法中：

ConfigureAuthapp.CreatePerOwinContext(ApplicationRoleManager.Create);

现在该项目已准备好利用新项目ApplicationRole。