cookie中存储一个信息
比如我们建立一个名为aspxcn，值为刘强的cookie

        HttpCookie myCookie = new HttpCookie("aspxcn");
        myCookie.Value = "刘强";
        Response.AppendCookie(myCookie);

取出这个cookie的方法
        HttpCookie mycook = Request.Cookies["aspxcn"];
        this.Label1.Text = mycook.Value;

在一个Cookie中储存多个信息比如我们在名为aspxcn的cookie下加多个信息
        HttpCookie myCookie = new HttpCookie("aspxcn");
        myCookie.Values.Add("color", "blue");
        myCookie.Values.Add("music", "love");
        Response.AppendCookie(myCookie);

取出信息
        HttpCookie mycookie = Request.Cookies["aspxcn"];
        string values1 = mycookie["color"];
        string values2 = mycookie["music"];