protected IDictionary<string, object> _outputValues = new Dictionary<string, object>(StringComparer.OrdinalIgnoreCase);        /// <summary>        /// 附加参数        /// </summary>        public IDictionary<string, object> OutputValues        {            get            {                return _outputValues;            }        }        /// <summary>        /// 获取返回值的附加参数        /// </summary>        /// <param name="key"></param>        /// <returns></returns>        public TM GetOutputValue<TM>(string key)        {            TM temp = default(TM);            if (!OutputValues.IsNullOrEmpty() && OutputValues.ContainsKey(key))            {                temp = (TM)OutputValues[key];            }            return temp;        }        /// <summary>        /// 设置返回值的附加参数        /// </summary>        /// <param name="key"></param>        /// <param name="value"></param>        public void SetOutputValue<TM>(string key, TM value)        {            OutputValues[key] = value;        }