private string PostData(string serverName,string postData)    {        postData = "body="+postData;        UTF8Encoding encoding = new UTF8Encoding();        byte[] data =http://www.mamicode.com/ encoding.GetBytes(postData);        string realUrl = url + "service=" + serverName;        HttpWebRequest myRequest = (HttpWebRequest)WebRequest.Create(realUrl);        myRequest.Method = "POST";        myRequest.ContentType = "application/x-www-form-urlencoded";        myRequest.ContentLength = data.Length;        Stream newStream = myRequest.GetRequestStream();        newStream.Write(data, 0, data.Length);        newStream.Close();        HttpWebResponse myResponse = (HttpWebResponse)myRequest.GetResponse();        StreamReader reader = new StreamReader(myResponse.GetResponseStream(), Encoding.UTF8);        string content = reader.ReadToEnd();        reader.Close();        return content;    }