BeeCloud.BCPay.queryPlansByCondition C# (CSharp) Метод

        public static List<BCPlan> queryPlansByCondition(string nameWithSubstring, string interval, int? intervalCount, int? trialDays, long? createdBefore, long? createdAfter, int? skip, int? limit, bool countOnly)
        {
            long timestamp = BCUtil.GetTimeStamp(DateTime.Now);

            string planURL = BCPrivateUtil.getHost() + BCConstants.version + BCConstants.bcplanURL;
            planURL += "?app_id=" + BCCache.Instance.appId + "&app_sign=" + BCPrivateUtil.getAppSignature(BCCache.Instance.appId, BCCache.Instance.appSecret, timestamp.ToString()) + "&timestamp=" + timestamp;
            if (nameWithSubstring != null)
            {
                planURL += "&name_with_substring=" + nameWithSubstring;
            }
            if (interval != null)
            {
                planURL += "&interval=" + interval;
            }
            if (intervalCount.HasValue)
            {
                planURL += "&interval_count=" + intervalCount.Value;
            }
            if (trialDays.HasValue)
            {
                planURL += "&trial_days=" + trialDays.Value;
            }
            if (createdBefore.HasValue)
            {
                planURL += "&created_before=" + createdBefore.Value;
            }
            if (createdAfter.HasValue)
            {
                planURL += "&created_after=" + createdAfter.Value;
            }
            if (skip.HasValue)
            {
                planURL += "&skip=" + skip.Value;
            }
            if (limit.HasValue)
            {
                planURL += "&limit=" + limit.Value;
            }
            planURL += "&count_only=" + countOnly;

            try
            {
                HttpWebResponse response = BCPrivateUtil.CreateGetHttpResponse(planURL, BCCache.Instance.networkTimeout);

                string respString = BCPrivateUtil.GetResponseString(response);

                JsonData responseData = JsonMapper.ToObject(respString);

                if (responseData["result_code"].ToString() == "0")
                {
                    List<BCPlan> plans = new List<BCPlan>();
                    if (responseData["plans"].IsArray)
                    {
                        foreach (JsonData planData in responseData["plans"])
                        {
                            BCPlan plan = new BCPlan();
                            plan.ID = planData["id"].ToString();
                            plan.fee = (int)planData["fee"];
                            plan.interval = planData["interval"].ToString();
                            plan.name = planData["name"].ToString();
                            plan.currency = planData["currency"].ToString();
                            plan.intervalCount = (int)planData["interval_count"];
                            plan.trialDays = (int)planData["trial_days"];
                            plan.valid = (bool)planData["valid"];
                            plan.optional = JsonMapper.ToObject<Dictionary<string, string>>(planData["optional"].ToJson().ToString());

                            plans.Add(plan);
                        }
                    }
                    return plans;
                }
                else
                {
                    var ex = new BCException(responseData["err_detail"].ToString());
                    throw ex;
                }
            }
            catch (Exception e)
            {
                var ex = new BCException(e.Message);
                throw ex;
            }
        }