asp.net中关于Cookies
大家先看看我这代码：

if (rmbUser.Checked)//记住密码

               {

                   HttpCookie cook = new HttpCookie ("Cookie");

                   cook.Values.Add ("name", model.LoginId);

                   cook.Values.Add ("pwd", pwd.Text);

                   cook.Expires.Add (TimeSpan.FromDays (7));

                   Response.AppendCookie (cook);

               }

               else 

               {

                   HttpCookie ck = Request.Cookies["Cookie"];

                   if (ck != null)

                   {

                       ck.Expires = DateTime.Now.AddDays (-1);

                       Response.AppendCookie (ck);

                   }

               }

  

 if (Request.Cookies["Cookie"] != null) 

            {

                HttpCookie cookie=Request.Cookies["Cookie"] ;

                name.Text = cookie.Values["name"];

                pwd.Attributes.Add ("value", cookie.Values["pwd"]);

                rmbUser.Checked = true;

            }

问题是这样的，页面不关闭的前提下，正常退出后回到login页面，用户名和密码是记住的。但是，当把浏览器关闭后重新打开login页面后就不行了。why？
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