使用C#ASP.NET MVC标识以编程方式创建用户

我试图以编程方式将用户添加到ASP.NET MVC标识中

我遇到的错误是：

UserManager引发了类型为“System.NullReferenceException”的异常。

此函数是通过非来自此站点的帖子调用的。它位于AccountController中公共异步任务寄存器（RegisterViewModel模型）的正下方

[AllowAnonymous]
public async Task<bool> GenerateUser(string email)
{
        var user = new ApplicationUser { UserName = email, Email = email };
        string password = System.Web.Security.Membership.GeneratePassword(12, 4);
        var result = await UserManager.CreateAsync(user, password);

        if (result.Succeeded)
        {
           // Omitted
        }
        else { AddErrors(result); }

        return true;
 }

---

编辑2：

如所需：这是

ApplicationUserManager

    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
        };

        // Configure validation logic for passwords
        manager.PasswordValidator = new PasswordValidator
        {
            RequiredLength = 8,
            RequireNonLetterOrDigit = false,
            RequireDigit = false,
            RequireLowercase = false,
            RequireUppercase = false,
        };

        // 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;
    }
}

公共静态应用程序服务器管理器创建（IdentityFactoryOptions选项，IOwinContext上下文）
{
var manager=newapplicationUserManager（newuserstore（context.Get（））；
//为用户名配置验证逻辑
manager.UserValidator=新的UserValidator（管理器）
{
AllowOnlyAlphanumericUserNames=false，
RequireUniqueEmail=true
};
//配置密码的验证逻辑
manager.PasswordValidator=新密码验证器
{
所需长度=8，
RequiredOnletterDigit=false，
RequireDigit=false，
RequireLowercase=false，
RequireUppercase=false，
};
//配置用户锁定默认值
manager.UserLockoutEnabledByDefault=true；
manager.DefaultAccountLockoutTimeSpan=TimeSpan.FromMinutes（5）；
manager.MaxFailedAccessAttemptsBeforeLockout=5；
//注册双因素身份验证提供商。此应用程序使用电话和电子邮件作为接收验证用户代码的步骤
//您可以编写自己的提供者并将其插入此处。
manager.RegisterWofactorProvider（“电话代码”，新电话号码提供程序）
{
MessageFormat=“您的安全代码为{0}”
});
manager.RegisterWofactorProvider（“电子邮件代码”，新的EmailTokenProvider
{
Subject=“安全代码”，
BodyFormat=“您的安全代码为{0}”
});
manager.EmailService=新的EmailService（）；
manager.SmsService=新的SmsService（）；
var dataProtectionProvider=options.dataProtectionProvider；
if（dataProtectionProvider！=null）
{
manager.UserTokenProvider=
新的DataProtectorTokenProvider（dataProtectionProvider.Create（“ASP.NET标识”）；
}
退货经理；
}
}

问题在于UserManager，这解决了问题

    ApplicationDbContext context = new ApplicationDbContext();

    var roleManager = new RoleManager<IdentityRole>(new RoleStore<IdentityRole>(context));
    var UserManager = new UserManager<ApplicationUser>(new UserStore<ApplicationUser>(context));
    UserManager.UserValidator = new UserValidator<ApplicationUser>(UserManager)
    {
        AllowOnlyAlphanumericUserNames = false,
        RequireUniqueEmail = true
    };

    string password = System.Web.Security.Membership.GeneratePassword(12, 4);
    var user = new ApplicationUser();
    user.Email = model.Email;
    user.UserName = model.Email;

    string userPWD = password;

    var result = UserManager.Create(user, userPWD);

ApplicationDbContext context=new ApplicationDbContext（）；
var角色管理器=新角色管理器（新角色存储（上下文））；
var UserManager=newusermanager（newuserstore（context））；
UserManager.UserValidator=新的UserValidator（UserManager）
{
AllowOnlyAlphanumericUserNames=false，
RequireUniqueEmail=true
};
字符串密码=System.Web.Security.Membership.GeneratePassword（12,4）；
var user=new ApplicationUser（）；
user.Email=model.Email；
user.UserName=model.Email；
字符串userPWD=密码；
var result=UserManager.Create（user，userPWD）；

错误在哪里？@Cid它来自第一个代码块第6行的“result”变量。由于您使用的是

ApplicationUserManager

构造函数，您以前是否尝试设置

UserValidator

？我想你应该在这个上下文中设置

AllowOnlyAlphanumericUserNames=false

，你能在你的问题中显示

ApplicationUserManager

类定义吗？@tetsuyayayamamoto这给了我一个新的错误，但我们似乎取得了进展。我现在得到的

实体类型ApplicationUser不是当前上下文模型的一部分。

。我将其设置为

manager.UserValidator=newuservalidator（manager）{AllowOnlyAlphanumericUserNames=false，RequireUniqueEmail=true}

我还创建了

密码验证程序

var result = new AccountController().GenerateUser(model.emailAddress);

    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
        };

        // Configure validation logic for passwords
        manager.PasswordValidator = new PasswordValidator
        {
            RequiredLength = 8,
            RequireNonLetterOrDigit = false,
            RequireDigit = false,
            RequireLowercase = false,
            RequireUppercase = false,
        };

        // 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;
    }
}

    ApplicationDbContext context = new ApplicationDbContext();

    var roleManager = new RoleManager<IdentityRole>(new RoleStore<IdentityRole>(context));
    var UserManager = new UserManager<ApplicationUser>(new UserStore<ApplicationUser>(context));
    UserManager.UserValidator = new UserValidator<ApplicationUser>(UserManager)
    {
        AllowOnlyAlphanumericUserNames = false,
        RequireUniqueEmail = true
    };

    string password = System.Web.Security.Membership.GeneratePassword(12, 4);
    var user = new ApplicationUser();
    user.Email = model.Email;
    user.UserName = model.Email;

    string userPWD = password;

    var result = UserManager.Create(user, userPWD);