HttpWebRequest 发送 post

   string strURL = "
http://zhaohong.kq07.cn/index.ashx?appid=9AQnOMOs&appsecret=ei3kw9cuGLkZnX8i
";

            System.Net.HttpWebRequest request;

            request = (System.Net.HttpWebRequest)WebRequest.Create(strURL);

            request.Method = "POST";

            request.ContentType = "application/json;charset=utf-8";

            string paraUrlCoded = "{\"shangpin\":[{\"name\":\"手机" + DateTime.Now.ToShortTimeString() + "\",\"price\":\"20\",\"num\":\"5\",\"picurl\":\"
https://img.zcool.cn/community/01b34f58eee017a8012049efcfaf50.jpg\"},{\"name\":\
"手机套" + DateTime.Now.ToShortTimeString() + "\",\"price\":\"20\",\"num\":\"5\",\"picurl\":\"
https://img.zcool.cn/community/01b34f58eee017a8012049efcfaf50.jpg\"},{\"name\":\
"茶杯" + DateTime.Now.ToShortTimeString() + "\",\"price\":\"20\",\"num\":\"5\",\"picurl\":\"
https://img.zcool.cn/community/01b34f58eee017a8012049efcfaf50.jpg\"},{\"name\":\
"笔记本电脑\",\"price\":\"20\",\"num\":\"5\",\"picurl\":\"
https://img.zcool.cn/community/01b34f58eee017a8012049efcfaf50.jpg\
"}]}";

            byte[] payload;

            payload = System.Text.Encoding.GetEncoding("utf-8").GetBytes(paraUrlCoded);

            request.ContentLength = payload.Length;

            Stream writer = request.GetRequestStream();

            writer.Write(payload, 0, payload.Length);

            writer.Close();

            System.Net.HttpWebResponse response;

            response = (System.Net.HttpWebResponse)request.GetResponse();

            System.IO.Stream s;

            s = response.GetResponseStream();

            string StrDate = "";

            string strValue = "";

            StreamReader Reader = new StreamReader(s, Encoding.GetEncoding("utf-8"));

            while ((StrDate = Reader.ReadLine()) != null)

            {

                strValue += StrDate + "\r\n";

            }

            label1.Text = strValue;