解析GZIP压缩的网页

class Program
{
static void Main(string[] args)
{
HttpWebRequest request = (HttpWebRequest)WebRequest.Create("http://wthrcdn.etouch.cn/weather_mini?city=%E9%83%91%E5%B7%9E");
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
Stream ResStream = new System.IO.Compression.GZipStream(response.GetResponseStream(), System.IO.Compression.CompressionMode.Decompress);
Encoding encoding = Encoding.GetEncoding("utf-8");
StreamReader streamReader = new StreamReader(ResStream, encoding);
string s = streamReader.ReadToEnd();
Console.WriteLine(s);
Console.ReadKey();
}
}