C# HttpWebRequest post提交数据,提交对象

//1.使用Dictionary字典提交数据，这样比较清晰。(针对对象)

var jsonTextReplace = jsonText.Replace("[", " ").Replace("]", "");
                    var jo = JObject.Parse(jsonTextReplace);
                    string UserCard = jo["UserCard"].ToString();
                    string Residential = jo["Residential"].ToString();
                    string FloorId = jo["FloorId"].ToString();
                    string UnitId = jo["UnitId"].ToString();
                    string LayerId = jo["LayerId"].ToString();
                    string RoomID = jo["RoomID"].ToString();
                    string Address = jo["Address"].ToString();
                    string UserName = jo["UserName"].ToString();
                    string ConstructionArea = jo["ConstructionArea"].ToString();
                    string DeviceNo = item.DeviceNo;

 IDictionary<string, string> para = new Dictionary<string, string>();
                    para.Add("CommunityAddress", Address);
                    para.Add("CommunityHotArea", "1");
                    para.Add("CommunityName", Residential);
                    para.Add("BuildingNo", FloorId);
                    para.Add("UnitNo", UnitId);
                    para.Add("Floor", LayerId);
                    para.Add("HouseNo", RoomID);
                    para.Add("UserCode", UserCard);
              string info = JsonConvert.SerializeObject(para).ToString();

  public static string HttpPost(string url, string paramData, Dictionary<string, string> headerDic = null)
        {
            string result = string.Empty;
            try
            {
                HttpWebRequest wbRequest = (HttpWebRequest)WebRequest.Create(url);

                wbRequest.Method = "POST";
                //wbRequest.ContentType = "application/x-www-form-urlencoded";

                wbRequest.ContentType = "application/json";

                wbRequest.ContentLength = Encoding.UTF8.GetByteCount(paramData);

                if (headerDic != null && headerDic.Count > 0)
                {
                    foreach (var item in headerDic)
                    {
                        wbRequest.Headers.Add(item.Key, item.Value);
                    }
                }
                using (Stream requestStream = wbRequest.GetRequestStream())
                {
                    using (StreamWriter swrite = new StreamWriter(requestStream))
                    {
                        swrite.Write(paramData);
                    }
                }
                HttpWebResponse wbResponse = (HttpWebResponse)wbRequest.GetResponse();
                using (Stream responseStream = wbResponse.GetResponseStream())
                {
                    using (StreamReader sread = new StreamReader(responseStream))
                    {
                        result = sread.ReadToEnd();
                    }
                }
            }
            catch (Exception ex)
            {

            }

            return result;
        }

//2.参数少的情况下，直接拼接参数字符串

   private string PostWebRequest(string postUrl, string paramData)
        {
            string responseContent = string.Empty;
            try
            {
                byte[] byteArray = Encoding.UTF8.GetBytes(paramData); //转化
                HttpWebRequest webReq = (HttpWebRequest)WebRequest.Create(new Uri(postUrl));
                webReq.Method = "POST";
                webReq.ContentType = "application/x-www-form-urlencoded";
                webReq.ContentLength = byteArray.Length;
                using (Stream reqStream = webReq.GetRequestStream())
                {
                    reqStream.Write(byteArray, 0, byteArray.Length);

                }
                using (HttpWebResponse response = (HttpWebResponse)webReq.GetResponse())
                {

                    using (StreamReader sr = new StreamReader(response.GetResponseStream(), Encoding.Default))
                    {
                        responseContent = sr.ReadToEnd().ToString();
                    }
                }
            }
            catch (Exception e)
            {
                return "204";
            }
            return responseContent;
        }