public ActionResult ModuleElements(int userID) { if (!UserInfoServices.IsExists(u => u.ID == userID)) { return(Json(new { State = 0, Message = "用户不存在" })); } List <Module> modules = UserInfoServices.LoadUserModule(userID); if (modules.Count <= 0) { ViewBag.ModuleTree = "\"\""; } else { ViewBag.ModuleTree = Serialization.SerializeObject(modules .Select(m => new { id = m.ID, pId = m.Parent?.ID, name = m.Name })); } return(PartialView()); }