pplication/x-www-form-urlencoded 請求格式調用

public string Post(string Url, string jsonParas)
{
string res = string.Empty;
            try
            {
byte[] byteArray = Encoding.Default.GetBytes(jsonParas);
HttpWebRequest webReq = (HttpWebRequest)WebRequest.Create(new Uri(Url));
                webReq.Method = "POST";
                webReq.ContentType = "application/x-www-form-urlencoded";

                webReq.ContentLength = byteArray.Length;
                Stream newStream = webReq.GetRequestStream();
                newStream.Write(byteArray, 0, byteArray.Length);
                newStream.Close();
                HttpWebResponse response = (HttpWebResponse)webReq.GetResponse();
                StreamReader sr = new StreamReader(response.GetResponseStream(), Encoding.UTF8);
res = sr.ReadToEnd();
                sr.Close();
                response.Close();
                newStream.Close();
            }
            catch (Exception ex)
            {
                return ex.Message;
            }
return res;

}

//調用
string para = "method=AZTSSchedule&projectNo=04118180&stationIds=12331232&productId=ASZXSS";
Post("http://xxxx:8888/product/project", para);