private string EntityStruct()
        {
            var  code    = new StringBuilder();
            bool isFirst = true;

            foreach (PropertyConfig col in Table.PublishProperty)
            {
                if (isFirst)
                {
                    isFirst = false;
                }
                else
                {
                    code.Append(',');
                }
                code.AppendFormat(@"
                {{
                    Real_{0},
                    new PropertySturct
                    {{
                        Index = Index_{0},
                        PropertyName = ""{0}"",
                        PropertyType = typeof({1}),
                        CanNull = {2},
                        ValueType = PropertyValueType.{3}
                    }}
                }}", col.PropertyName
                                  , col.CustomType ?? col.CsType
                                  , col.Nullable ? "true" : "false"
                                  , CodeBuilderDefault.PropertyValueType(col));
            }
            var code2 = new StringBuilder();

            foreach (PropertyConfig col in Table.PublishProperty)
            {
                code2.AppendFormat(@"
        public const byte Index_{0} = {1};", col.PropertyName, col.Index);
            }
            return(string.Format(@"
        {3}

        /// <summary>
        /// 实体结构
        /// </summary>
        [IgnoreDataMember,Browsable (false)]
        public override EntitySturct __Struct
        {{
            get
            {{
                return __struct;
            }}
         }}

        /// <summary>
        /// 实体结构
        /// </summary>
        [IgnoreDataMember]
        static readonly EntitySturct __struct = new EntitySturct
        {{
            EntityName = ""{0}"",
            PrimaryKey = ""{1}"",
            Properties = new Dictionary<int, PropertySturct>
            {{{2}
            }}
         }};
"
                                 , Table.EntityName, Table.PrimaryColumn.PropertyName, code, code2));
        }