我的问题是，我不能通过CodeFirst创建一个表，外键引用默认的AspNetUsers表。

例如：
我创建了一个名为“地址”的表

public class Address
    {
        [Key]
        public string UserId { get; set; }
        public string MyAddress { get; set; }
    }

但是如何创建AspNetUsers的外键引用？

我尝试替换上面的属性

public IdentityUser MyAddress { get; set; }
// Or
public virtual IdentityUser MyAddress { get; set; }
// Or
public virtual ApplicationUser MyAddress { get; set; }

但是他们都显示错误：

One or more validation errors were detected during model generation:

MiaPos.Models.IdentityUserLogin: : EntityType 'IdentityUserLogin' has no key defined. Define the key for this EntityType. 
MiaPos.Models.IdentityUserRole: : EntityType 'IdentityUserRole' has no key defined. Define the key for this EntityType. 
IdentityUserLogins: EntityType: EntitySet 'IdentityUserLogins' is based on type 'IdentityUserLogin' that has no keys defined. 
IdentityUserRoles: EntityType: EntitySet 'IdentityUserRoles' is based on type 'IdentityUserRole' that has no keys defined.

我也尝试从这个post覆盖OnModelCreating

protected override void OnModelCreating(DbModelBuilder modelBuilder)
{
    modelBuilder.Entity<IdentityUserLogin>().HasKey<string>(l => l.UserId);
    modelBuilder.Entity<IdentityRole>().HasKey<string>(r => r.Id);
    modelBuilder.Entity<IdentityUserRole>().HasKey(r => new { r.RoleId,r.UserId });
}

但是当我运行Add-Migration时，它创建了IdentityUserLogin，IdentityRole，IdentityUserRole表，并且它重复，只是前缀不同。 (AspNet身份)

最后我在十秒钟内通过sql进行操作，但是我只想知道为什么我不能在CodeFirst中执行
而为什么很难从微软2014新技术做这样的事情。