诚心 求教c#登陆网站获取网页及链接网页数据

Question

请求子网页时，附加Cookie
....
CookieContainer cookieCon = new CookieContainer(); 
cookieCon.SetCookies(new Uri( url) , "Url关联的Cookie字符串");
req.CookieContainer = cookieCon; 

Answer 1

HttpWebResponse res = (HttpWebResponse)req.GetResponse(); 
        Stream ReceiveStream = res.GetResponseStream(); 
StreamReader reader=new StreamReader(ReceiveStream);//套接StreamReader 
String source=reader.ReadToEnd();//一次读取所有相应内容
............Stream outStream = File.Create(filename); 
StreamWriter writer=new StreamWriter(outStream);//套接StreamWriter
writer.Write(source);//将读取到的内容一次写入文件
outStream.Close();
writer.Close();这样似乎效率比你的更高。