急！搞了我一夜还是不行！GetResponseStream()返回乱码！怎么修改encoding都不成！求老师们帮帮忙！

Question

using System;
using System.Collections.Generic;
using System.Text;
using System.IO;
using System.Net;
namespace alvvtest
{
    class Program
    {
        static void Main(string[] args)
        {
            string postzf = "pageindex=1";
            string url = "http://www.alivv.com/ajax/Alivv.AjaxRun.WebSiteAjax,Alivv.AjaxRun.ashx?_method=BuyerWebSiteList&_session=r";            
                HttpWebRequest newqq = null;
                HttpWebResponse newfh = null;
                                 System.Net.ServicePointManager.Expect100Continue = false;
                    Uri newurl = new Uri(url);
                    newqq = (HttpWebRequest)WebRequest.Create(newurl);
                    string data = postzf;
                    newqq.Host = "www.alivv.com";
                    newqq.UserAgent = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; GTB6; .NET CLR 2.0.50727; CIBA)";
                    newqq.Accept = "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8";
                    newqq.Headers.Add("Accept-Language", "zh-cn,zh;q=0.8,en-us;q=0.5,en;q=0.3");
                    newqq.Headers.Add("Accept-Encoding", "gzip, deflate");
                    newqq.Headers.Add("DNT", "1");
                    newqq.ContentType = "text/plain; charset=UTF-8";                    newqq.Referer = "http://www.alivv.com/links_gd.html";                    newqq.CookieContainer = new CookieContainer() ;
                    newqq.Accept = "*/*";
                    newqq.Method = "POST";
                    newqq.Timeout = 60000;
                    //newqq.KeepAlive = true;                      //newqqt.AllowAutoRedirect = true;
                    byte[] byteArray = Encoding.UTF8.GetBytes(data);
                    Stream stream = newqq.GetRequestStream();                    stream.Write(byteArray, 0, byteArray.Length);
                    stream.Close();
                    newfh = (HttpWebResponse)newqq.GetResponse();
                    StreamReader sr = new StreamReader(newfh.GetResponseStream(), Encoding.UTF8);
                    string fanhuizhi = sr.ReadToEnd();                
            
        }
    }
}最后的fanhuizhi是乱码不管怎么修改encoding都不行目前我发现在头协议当中有一句： newqq.Headers.Add("Accept-Encoding", "gzip, deflate");难道说信息流通过压缩了？还有就是post部分的代码是否正确呢？希望老师们帮我看一下，被这个问题搞死了！附上正常返回的值：

Answer 1

 HttpWebResponse WebResponse = (HttpWebResponse)Http.GetResponse();    Stream responseStream = responseStream = WebResponse.GetResponseStream();
    if (WebResponse.ContentEncoding.ToLower().Contains("gzip"))
        responseStream = new GZipStream(responseStream, CompressionMode.Decompress);
    else if (WebResponse.ContentEncoding.ToLower().Contains("deflate"))
        responseStream = new DeflateStream(responseStream, CompressionMode.Decompress);                StreamReader Reader = new StreamReader(responseStream, Encoding.Default);    string Html = Reader.ReadToEnd();

Answer 2

或者
request.AutomaticDecompression = DecompressionMethods.GZip Or DecompressionMethods.Deflate你应该先解压，再读取

Answer 3

或者
request.AutomaticDecompression = DecompressionMethods.GZip Or DecompressionMethods.Deflate你应该先解压，再读取

Answer 4

正解！ StreamReader Reader = new StreamReader(responseStream, Encoding.Default);后的Encoding是关键