问自定义类的内置身份验证。代码优先

EN

public class Post{
     public int Id { get; set; 
     public string Name { get; set; }

     public virtual ApplicationUser CreatedBy { get; set; } 
}

var post = new Post { Name = "My new post" }
var userManager = new UserManager<ApplicationUser>(new UserStore<ApplicationUser>(new ApplicationDbContext()));
var currenApplicationUser = userManager.FindById(User.Identity.GetUserId());
var currentUser = db.Users.Find(currenApplicationUser.Id);
post.CreatedBy = currentUser;
db.Posts.Add(post);
db.SaveChanges();