在EF Core中延迟加载时如何加载多个级别？

public class Blog
{
    public int BlogId { get; set; }
    public string Url { get; set; }
    public ICollection<Post> Posts { get; set; }
}

public class Post
{
    public int PostId { get; set; }
    public string Title { get; set; }
    public string Content { get; set; }
    public Blog Blog { get; set; }
    public ICollection<Comment> Comments { get; set; }
}

public class Comment
{
    public int CommentId { get; set; }
    public string Text { get; set; }
    public Post Post { get; set; }
}

var blogs = context.Blogs
    .Include(blog => blog.Posts)
        .ThenInclude(post => post.Comments)
    .ToList();

var blogs = context.Blogs
    .Include(blog => blog.Posts)
        .ThenInclude(post => post.Comments)
            .ThenInclude(comment => comment.Author)
    .ToList();

protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
{
    optionsBuilder.UseLazyLoadingProxies()
        .UseSqlServer("your_connection_string");
}

public class Blog
{
    public int BlogId { get; set; }
    public string Url { get; set; }
    public virtual ICollection<Post> Posts { get; set; } // 使用virtual关键字
}