HttpWebRequest myReq = (HttpWebRequest)WebRequest.Create("http://home.cnblogs.com/u/weiweiboqi/");
HttpWebResponse HttpWResp = (HttpWebResponse)myReq.GetResponse();
Stream receiveStream = HttpWResp.GetResponseStream();
Encoding encode = System.Text.Encoding.GetEncoding("utf-8");
StreamReader readStream = new StreamReader( receiveStream, encode );
String str = readStream.ReadToEnd();
HttpWResp.Close();
readStream.Close();
MSDN中HttpWebRequest/HttpWebResponse用法
原文：http://www.cnblogs.com/weiweiboqi/p/4685404.html