如何获得在C＃中网页的最后修改日期？ [英] How to get last modified date of the webpage in c#?

问题描述

我想知道如何使用C＃...？

I want to know how to get last modified date of the webpage using c#...?

我试过下面的代码来获取网页的最后修改日期，但我只得到日期为今天

I tried the below code but I get only date as today

HttpWebRequest req =(HttpWebRequest)WebRequest.Create("http://www.codeproject.com/KB/cs/youmanager.aspx");
HttpWebResponse res =(HttpWebResponse) req.GetResponse();
DateTime  abcd = res.LastModified;

先谢谢了。

Thanks in advance.

推荐答案

根据这个你的方法应该工作。也许该网页实际上今天修改？

According to this your method should work. Maybe the page was actually modified today?

也在寻找这种反应这里它是由HTTP服务器设置Last-Modified响应报头。因此，如果服务器没有正确设置字段，你不能依赖于它。

Also looking at this response here it is up to the HTTP server to set the Last-Modified response header. So if the server does not set the field correctly you can't rely on it.

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