如何将值插入虚拟字段

Question

我有一个学习者表，我在 AccountController 中为用户注册“Register(RegisterViewModel model)”设置了值。

 if (result.Succeeded)
            {
                await SignInManager.SignInAsync(user, isPersistent:false, rememberBrowser:false);


                using (The_FactoryDBContext db = new The_FactoryDBContext())
                    {
                        Learner learner = new Learner();

                        learner.learnerID = User.Identity.GetUserId();
                        learner.llCounter = 0;
                        learner.dtwCounter = 0;
                        learner.ftwCounter = 0;
                        learner.counter = 0;

                        db.Learners.Add(learner);
                        db.SaveChanges();
                    }
                }
       }

这就是我的学习者自动生成的类与一些虚拟字段的外观。

public partial class Learner
{
    public Learner()
    {
        this.Learner_Treasure = new HashSet<Learner_Treasure>();
    }

    public string learnerID { get; set; }
    public int llCounter { get; set; }
    public int dtwCounter { get; set; }
    public int ftwCounter { get; set; }
    public int counter { get; set; }

    public virtual AspNetUser AspNetUser { get; set; }
    public virtual ICollection<Learner_Treasure> Learner_Treasure { get; set; }
}

}

但是我在注册时收到此错误，我不知道如何修复它，有人可以帮助我，还是我的代码可能在错误的地方？

INSERT 语句与 FOREIGN KEY 约束“FK_Learner_AspNetUsers1”冲突。冲突发生在数据库“The_Factory”、表“dbo.AspNetUsers”、列“Id”中。

AspNetUser 类

public partial class AspNetUser
{
    public AspNetUser()
    {
        this.AspNetUserClaims = new HashSet<AspNetUserClaim>();
        this.AspNetUserLogins = new HashSet<AspNetUserLogin>();
        this.AspNetRoles = new HashSet<AspNetRole>();
    }

    public string Id { get; set; }
    public string Email { get; set; }
    public bool EmailConfirmed { get; set; }
    public string PasswordHash { get; set; }
    public string SecurityStamp { get; set; }
    public string PhoneNumber { get; set; }
    public bool PhoneNumberConfirmed { get; set; }
    public bool TwoFactorEnabled { get; set; }
    public Nullable<System.DateTime> LockoutEndDateUtc { get; set; }
    public bool LockoutEnabled { get; set; }
    public int AccessFailedCount { get; set; }
    public string UserName { get; set; }
    public int AvatarID { get; set; }

    public virtual ICollection<AspNetUserClaim> AspNetUserClaims { get; set; }
    public virtual ICollection<AspNetUserLogin> AspNetUserLogins { get; set; }
    public virtual Avatar Avatar { get; set; }

    public virtual Learner Learner { get; set; }
    public virtual ICollection<AspNetRole> AspNetRoles { get; set; }
}

}

Answer 1

试试

[ForeignKey("AspNetUser")]

超过learnerID 属性。原因是 EF 不知道您正在创建从 learner 到 user 的 1-1 映射（并且 learner 中的 PK 也是到 user 的 FK）。放置这个属性会告诉 EF 你的设计。