/// 
/// POST请求与获取结果/// 
public static string HttpPost(string Url, string postDataStr){         //把数组转换成流中所需字节数组类型            Encoding code = Encoding.GetEncoding("utf-8");            byte[] bytesRequestData = code.GetBytes(postDataStr);            //设置HttpWebRequest基本信息            HttpWebRequest myReq = (HttpWebRequest)WebRequest.Create(Url);            myReq.Method = "post";            myReq.ContentType = "application/x-www-form-urlencoded";            //填充POST数据            myReq.ContentLength = bytesRequestData.Length;            Stream requestStream = myReq.GetRequestStream();            requestStream.Write(bytesRequestData, 0, bytesRequestData.Length);            requestStream.Close();            //发送POST数据请求服务器            HttpWebResponse HttpWResp = (HttpWebResponse)myReq.GetResponse();            //接收对应的流            StreamReader reader = new StreamReader(HttpWResp.GetResponseStream());            string retString = reader.ReadToEnd();     return retString;}

 

 

 

--调用

var result = HttpPost(sendUrl, "id=1&text=" + "这是音频内容");