Cookie问题~!

Question

HttpCookie httpCookie=Request.Cookies["USERNAME"];
for (int i=0;i<Request.Cookies.Count;i++)
{
    httpCookie=Request.Cookies[i];
    httpCookie.Expires=DateTime.Now.Date.AddDay(-1);
    Response.Cookies.Add(httpCookie);
}
这样清除Cookie有错吗?
为什么我一运行这代码机子就很慢进入假死状态..还有我想问Response.AppendCookies()跟Response.Cookies.Add()有什么区别啊

Answer 1

晕..HttpCookie httpCookie=Request.Cookies["USERNAME"];
    httpCookie.Expires=DateTime.Now.Date.AddDay(-1);
    Response.Cookies.Add(httpCookie);这样才是销毁COOKIES...

Answer 2

如果你有多个COOKIES..需要一次性销毁..这么写看看:for (int i=0;i<Request.Cookies.Count;i++)
{
    HttpCookie httpCookie=Request.Cookies[i];
    httpCookie.Expires=DateTime.Now.Date.AddDay(-1);
    Response.Cookies.Add(httpCookie);
}这样的话,所有属于当前域的COOKIES都会被销毁