public ActionResult RemovePost(int id, int pid) { Seminar seminar = SeminarBll.GetById(id); Post post = PostBll.GetById(pid); seminar.Post.Remove(post); bool b = SeminarBll.UpdateEntitySaved(seminar); return(ResultData(null, b, b ? $"已成功将【{post.Title}】从专题【{seminar.Title}】移除" : "添加失败!")); }