Cookie过期后如何显示内容 [英] How do I display something when a cookie expires

问题描述

我想在有人访问该网站且没有Cookie时显示视频.他们看到视频后，会添加一个cookie，但是当cookie过期时，会再次播放视频.

I''m wanting to show a video when a person comes to the site and doesn''t have a cookie. After they see the video, a cookie is added, but when the cookie expires, the video is played again.

if (Request.Cookies["x"] != null)
        {
            //do nothing
        }
        else
        {
            ModalPopupExtender1.Show();
            Response.Cookies["x"].Value = DateTime.Now.ToString();
            Response.Cookies["x"].Expires = DateTime.Now.AddHours(24);
        }

我认为这可以正常工作，但是只有在清除浏览器中的所有Cookie的情况下，电影才会显示. 24小时后，电影将不再播放.

I would think this would work correctly, however the movie only shows if the browser is cleared of all cookies. 24hrs later the movie will not play.

How do I fix this?

推荐答案

Request.Cookies ["x"]将创建cookie(如果不存在).

尝试测试值中是否为空字符串.

Request.Cookies["x"] will create the cookie if it doesn''t exist.

try testing for an empty string in the value instead.

if (Request.Cookies["x"] != null && Convert.ToDateTime(Request.Cookies["x"].Expires) < DateTime.Now)
        {
            //do nothing
        }
        else
        {
            ModalPopupExtender1.Show();
            Response.Cookies["x"].Value = DateTime.Now.ToString();
            Response.Cookies["x"].Expires = DateTime.Now.AddHours(24);
        }

可以.

This works.

http://www.tizag.com/aspTutorial/aspCookie.php

http://www.tizag.com/aspTutorial/aspCookie.php

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