CS_threescale.Api.AddTransactions C# (CSharp) Метод

        private void AddTransactions(StringBuilder contentBuilder, Hashtable transactions)
        {
            string app_id;
            //string client_ip;
            string timestamp;
            Hashtable obj;
            Hashtable usage;

            foreach (DictionaryEntry entri in transactions)
            {
                app_id = null;
                //client_ip = null;
                timestamp = null;
                obj = null;
                usage = null;

                obj = (Hashtable)entri.Value;

                app_id = (string)obj["app_id"];
                string user_key = (string)obj["user_key"];
                //client_ip = (string)obj["client_ip"];
                timestamp = (string)obj["timestamp"];
                usage = (Hashtable)obj["usage"];

                //if ((app_id == null) || (app_id.Length <= 0)) throw new ApiException("argument error: undefined transaction, app_id is missing in one record");
                if ((usage == null) || (usage.Count <= 0)) throw new ApiException("argument error: undefined transaction, usage is missing in one record");

                if ((timestamp!=null) && (timestamp.Length <=0)) timestamp=null;

                if ((app_id!=null) && (app_id.Length>0)) {
                    contentBuilder.AppendFormat("&transactions[{0}][{1}]={2}",entri.Key,"app_id",app_id);
                }

                if ((user_key!=null) && (user_key.Length>0)) {
                    contentBuilder.AppendFormat("&transactions[{0}][{1}]={2}", entri.Key, "user_key", user_key);
                }

                if(timestamp != null)
                {
                    contentBuilder.AppendFormat("&transactions[{0}][{1}]={2}", entri.Key, "timestamp", timestamp);
                }

                foreach (DictionaryEntry entri_usage in usage)
                {
                    contentBuilder.AppendFormat("&transactions[{0}][{1}][{2}]={3}",entri.Key,"usage",entri_usage.Key,entri_usage.Value);
                }
            }
        }