如何在ASP.Net MVC5中跟踪匿名用户的活动？

protected void Application_Start()
{
    // 启用Session
    AreaRegistration.RegisterAllAreas();
    RouteConfig.RegisterRoutes(RouteTable.Routes);
    BundleConfig.RegisterBundles(BundleTable.Bundles);
    // 启用Session
    HttpContext.Current.SetSessionStateBehavior(SessionStateBehavior.Required);
}

public ActionResult Index()
{
    // 获取Session中的活动信息
    List<string> activities = Session["Activities"] as List<string>;

    // 如果Session中没有活动信息，则创建一个新的列表
    if (activities == null)
    {
        activities = new List<string>();
    }

    // 添加当前活动到列表中
    activities.Add("用户访问了首页");

    // 更新Session中的活动信息
    Session["Activities"] = activities;

    return View();
}

public ActionResult ActivityLog()
{
    // 获取Session中的活动信息
    List<string> activities = Session["Activities"] as List<string>;

    return View(activities);
}