CookieContainer

HttpWebRequest属性提供CookieContainer类的一个实例，该实例包含与此请求关联的 cookie。

 1         CookieContainer c = new CookieContainer();    //声明一个CookieContainer
 2         HttpWebRequest requset = (HttpWebRequest)WebRequest.Create("URL1登录页");
 3         requset.CookieContainer = c;      //登录相关的Cookie
 4         HttpWebResponse respons = (HttpWebResponse)requset.GetResponse();
 5         
 6         Stream dataStream = respons.GetResponseStream();
 7         StreamReader reader = new StreamReader(dataStream, System.Text.Encoding.GetEncoding("gb2312"));
 8         string s = reader.ReadToEnd();
 9         dataStream.Close();
10         reader.Close();
11 
12         requset = (HttpWebRequest)WebRequest.Create("URL2其他页面");
13         requset.CookieContainer = c;     //呆着登录相关的Cookie去访问内部页面
14         respons = (HttpWebResponse)requset.GetResponse();
15 
16         dataStream = respons.GetResponseStream();
17         reader = new StreamReader(dataStream, System.Text.Encoding.GetEncoding("gb2312"));
18         s = reader.ReadToEnd();
19         dataStream.Close();
20         reader.Close();
21         Response.Write(s);

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原文地址：https://www.cnblogs.com/wupeiqi/p/2767803.html