设置UserManager .Net Core的数据保护提供程序

Question

我只是将用Mvc编写的现有项目转换为Core，并且在这里停留了很多天 因为无法弄清楚如何将此方法用作依赖项并注入控制器中？相反，我正在调用与static相同的方法，但现在无法设置TokenProvider。

  private  ApplicationUserManager getUserManager()
    {


        var manager = new ApplicationUserManager(new MySqlUserStore<ApplicationUser>());
        manager.UserValidator = new UserValidator<ApplicationUser>(manager)
        {
            AllowOnlyAlphanumericUserNames = false,

        };

        // Configure validation logic for passwords
        manager.PasswordValidator = new PasswordValidator
        {
            RequiredLength = 2,
            RequireNonLetterOrDigit = false,
            RequireDigit = false,
            RequireLowercase = false,
            RequireUppercase = false
        };

        // Configure user lockout defaults
        manager.UserLockoutEnabledByDefault = true;
        manager.DefaultAccountLockoutTimeSpan = System.TimeSpan.FromMinutes(50);
        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;
    }

如何设置这些行？

var dataProtectionProvider = options.DataProtectionProvider;
        if (dataProtectionProvider != null)
        {
            manager.UserTokenProvider =
                new DataProtectorTokenProvider<ApplicationUser>(dataProtectionProvider.Create("ASP.NET Identity"));
        }

在generateTokenForpassword抛出时没有这个

This，请帮助