HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create("http://www.baidu.com");
            HttpWebResponse response = (HttpWebResponse)request.GetResponse();
            Stream receiveStream = response.GetResponseStream();
            byte[] bf = new byte[20];
            int count = receiveStream.Read(bf, 0, 20);
            while (count > 0)
            {
                count = receiveStream.Read(bf, 0, 20);//疑问就在这一句,
                //我想请问一下,Stream.Read()这个方法,工作的时候是如何从互联网上获取信息的,?

                //因为,经过我测试,好像每调用一次Stream.Read(),会从互联网下载64KB左右的信息,(至于储存到哪了,不太清楚)
                //然后直到循环调用Stream.Read()所得到的信息达到64K之后,才会再次从互联网读取64k
                //这是我通过360,以及网卡流量监控软件测试出来的结果,
            }
            receiveStream.Close();
            response.Close();