问如何在单个控制器中的操作之间共享数据

EN

    public ActionResult ViewForum(int ForumID)
    {
        _frmSrv = new ForumService();
        _roleSrv = new RoleService();
        //_userAccess = new UserAccess();
        var modelView = _frmSrv.GetForumIndexView(ForumID);
        TempData[CurrentUser.Name] = _roleSrv.GetUserAccessForForum(CurrentUser, ForumID);
        modelView.UserAccess = TempData[CurrentUser.Name] as UserAccess;
        return View(modelView);
    }

    public ActionResult ViewThread(int ThreadID)
    {
        _postSrv = new PostService();
        var modelView = _postSrv.GetThreadIndexView(ThreadID);
        modelView.UserAccess = TempData[CurrentUser.Name] as UserAccess;
        return View(modelView);
    }