关于COOKIE的怪问题!~

Question

为什么我的COOKIE清除了值还有???
int cookie;
//Request.Cookies.Remove("deny");
//Request.Cookies.Clear();
以上两种清除方法我都用过了.当它们不是注释的时候这个COOKIE的值就是 0
,但是一把它们注释起来这COOKIE就又回到6了...为什么啊?
cookie = Convert.ToInt32(Request.Cookies["deny"].Value.ToString());  //这是读取COOKIE   值是6protected void Button1_Click(object sender, EventArgs e)
    {
HttpCookie hc = new HttpCookie("deny");
                hc.Expires.AddYears(10);
                hc.Value = "6";
                Response.Cookies.Add(hc);
}    //这是我通过点击加的一个COOKIE,它是在一个按钮事件里的.所以页面加载不会涉及到这里.

Answer 1

Remove只是从集合中清楚了该Cookie项，并没有实际删除吧。
我试了一下，这样可以删除（将它的过期日期设置为一个已经过去的时间）
            HttpCookie cookie = Request.Cookies["deny"];
            if (cookie == null)
            {
                Response.Write("cookie is not exists.");
                cookie = new HttpCookie("deny", "6");
                cookie.Expires = DateTime.Now.AddYears(10);
                Response.Cookies.Add(cookie);
            }
            else
            {
                Response.Write("cookie's value is " + cookie.Value);
                cookie.Expires = DateTime.Now.AddYears(-1);
                Response.Cookies.Set(cookie);
            }

Answer 2

    protected void Page_Load(object sender, EventArgs e)
    {
            HttpCookie cookie = Request.Cookies["deny"];
            if (cookie == null)
            {
                Response.Write("cookie is not exists.");
                cookie = new HttpCookie("deny", "6");
                cookie.Expires = DateTime.Now.AddYears(10);
                Response.Cookies.Add(cookie);
            }
            else
            {
                Response.Write("cookie's value is " + cookie.Value);
                cookie.Expires = DateTime.Now.AddYears(-1);
                Response.Cookies.Set(cookie);
            }
    }