Question

我试过

if (Request.Cookies["IsGuest"] != null)
     {
       Response.Cookies["IsGuest"].Expires = DateTime.Now.AddDays(-1);
       //HttpCookie myCookie = new HttpCookie("IsGuest");
       //myCookie.Expires = DateTime.Now.AddDays(-1d);
       //Response.Cookies.Add(myCookie);
     }
    string a = Request.Cookies["IsGuest"].Value;

但Request.Cookies["IsGuest"]永远不会为空。评论未注释的代码并反之亦然也无济于事。

Answer 1

试试这个：

if (Request.Cookies["IsGuest"] != null || Request.Cookies["IsGuest"].Value != "")
     {
       Response.Cookies["IsGuest"].Expires = DateTime.Now.AddDays(-1);
       //HttpCookie myCookie = new HttpCookie("IsGuest");
       //myCookie.Expires = DateTime.Now.AddDays(-1d);
       //Response.Cookies.Add(myCookie);
     }
string a = Request.Cookies["IsGuest"].Value;

我认为你的Cookie存在，但它没有任何价值。如果它不起作用，请查看字符串a中的内容，而不是在第一行中进行比较。

有没有办法在Asp.Net中取消cookie

1 个答案: