c#抓取別的網頁的內容

 

 string content = string.Empty;
            string str = "http://www.baidu.com/";
            WebRequest wrq = WebRequest.Create(str);
            WebResponse wrs = wrq.GetResponse();
            using (StreamReader dr = new StreamReader(wrs.GetResponseStream(), Encoding.GetEncoding("gb2312")))
            {
                content = dr.ReadToEnd();//这就是全部内容
                //得到内容后根据正则获取你所需要的东西。要先分析他的html
            }
            using (StreamWriter sw = new StreamWriter(Server.MapPath("default.htm"), false, Encoding.GetEncoding("gb2312")))
            {
                sw.WriteLine(content);

            }
        }