Cookie急了~

Question

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HttpCookie cookie = new HttpCookie("User");
                    cookie.Values.Add("Grade", System.Web.HttpUtility.UrlEncode(ds.Tables[0].Rows[0]["Member_grade"].ToString()));
                    cookie.Values.Add("Guid", ds.Tables[0].Rows[0]["mem_Guid"].ToString());
                    cookie.Values.Add("Name", HttpUtility.UrlEncode(ds.Tables[0].Rows[0]["mem_UserName"].ToString()));
                    cookie.Expires = DateTime.Now.AddMinutes(20);   
                    cookie.HttpOnly = true;
                    HttpContext.Current.Response.AppendCookie(cookie);
                    HttpContext.Current.Response.Redirect("index.aspx");安全退出
HttpCookie cookie = new HttpCookie("User");
        cookie.Values.Add("Grade", null);
        cookie.Values.Add("Guid", null);
        cookie.Values.Add("Name", null);
        cookie.Expires = DateTime.Now.AddMinutes(-1);
        cookie.HttpOnly = true;
        HttpContext.Current.Response.AppendCookie(cookie);这样清理Cookie不可以吗？？？

Answer 1

给看看啊，这样为什么不能清除cookie呢

Answer 2

直接js里就可以清除了，不用写在服务器端
function ClearCookies() {
    $.cookie("cookiename", null, { path: '/', expires: -1 });
}