/// <summary>
        /// 获取数据库值转换接口
        /// </summary>
        /// <param name="field"></param>
        /// <returns></returns>
        public static IDbValueConvertor GetDbValueConvertor(this IDataFieldModel field)
        {
            Type v = DataModelHelper.GetExtendProerty_DbFieldValueConvertType(field.InnerExtend);

            if (v != null)
            {
                return(v.CreateObject() as IDbValueConvertor);
            }
            return(null);
        }