Stream responseStream;

try

{

WebResponse wr = httpRequest.GetResponse();

responseStream = wr.GetResponseStream();

if (wr.Headers["Content-Encoding"] == "gzip")//gzip解压处理

{

MemoryStream msTemp = new MemoryStream();

GZipStream gzs = new GZipStream(responseStream, CompressionMode.Decompress);

byte[] buf=new byte[1024];

int len;

while ((len = gzs.Read(buf, 0, buf.Length)) > 0)

{

msTemp.Write(buf, 0, len);

}

msTemp.Position = 0;

responseStream = msTemp;

}

}

catch

{

return "";

}