如何从.Net删除cookie

Question

可能重复:
点击退出时删除cookie

我想在用户注销时删除cookie.

这是我的代码:

 if (HttpContext.Current.Request.Cookies["currentUser"] != null)
 {
     DeleteCookie(HttpContext.Current.Request.Cookies["currentUser"]);
 }


       public void DeleteCookie(HttpCookie httpCookie)
        {
            try
            {
                httpCookie.Value = null;
                httpCookie.Expires = DateTime.Now.AddMinutes(-20);
                HttpContext.Current.Request.Cookies.Add(httpCookie);
            }
            catch (Exception ex)
            {
                throw (ex);
            }
        }

但它不起作用.你有什么建议吗？

Answer 1

 HttpCookie currentUserCookie = HttpContext.Current.Request.Cookies["currentUser"];
 HttpContext.Current.Response.Cookies.Remove("currentUser");
 currentUserCookie.Expires = DateTime.Now.AddDays(-10);
 currentUserCookie.Value = null;
 HttpContext.Current.Response.SetCookie(currentUserCookie);

有用.

Answer 2

您应该将Response'sCookie 更改Expires为过去的值,而不是添加Cookie :

if (Request.Cookies["currentUser"] != null)
{
    Response.Cookies["currentUser"].Expires = DateTime.Now.AddDays(-1);   
}

旁注:而不是throw ex你应该只是throw为了保持其堆栈跟踪.C#:抛出自定义异常最佳实践