private void writeObject(JSONArray array, DataRow row)
        {
            var obj = new JSONObject();

            foreach (Field field in _fields)
            {
                field.Write(obj, row);
            }

            array.AddObject(obj);
        }
        public string CreateJSON()
        {
            _fields = Field.GetFields(_table);

            var array = new JSONArray(true);

            foreach (DataRow row in _table.Rows)
            {
                writeObject(array, row);
            }

            return array.ToJSON();
        }