public List <SimpleItem> LoadItemIdList()
        {
            List <SimpleItem> itemList = new List <SimpleItem>();

            string text = File.ReadAllText("ItemNameId.txt");

            string[]      lines     = text.Split(',');
            List <string> linesList = new List <string>(lines);


            for (int i = 0; i < linesList.Count; i++)
            {
                linesList[i] += "," + linesList[i + 1];
                linesList.RemoveAt(i + 1);

                SimpleItem item = jsonConverter.JsonToSimpleItem(linesList[i]);
                itemList.Add(item);
            }

            return(itemList);
        }
        public SimpleItem JsonToSimpleItem(string json)
        {
            SimpleItem item = JsonConvert.DeserializeObject <SimpleItem>(json);

            return(item);
        }