С# и Google

WebRequest request = WebRequest.Create("http://images.yandex.ru/");
          /* HttpWebResponse response = (HttpWebResponse)request.GetResponse();
            label1.Text = response.StatusDescription; */
            request.Method = "POST";
            Stream sw = request.GetRequestStream();
            request.ContentType = "text/html; charset=utf-8";
            byte[] z = Encoding.UTF8.GetBytes("yandsearch?text=radio&isize=small&rpt=image");
            // request.ContentLength = z.Length;
            sw.Write(z, 0, z.Length);
            HttpWebResponse response = (HttpWebResponse)request.GetResponse();
            StreamReader stream = new StreamReader(response.GetResponseStream(), Encoding.GetEncoding(response.CharacterSet));
            textBox2.Text = stream.ReadToEnd();
            sw.Close();
            stream.Close();