dynamic：动态类型简单用法，写法

    class 动态创建数据
    {
        //动态类型：本质感觉跟object的用法差不多，只是在执行的时候才知道数据类型
        public dynamic Dynamic()
        {
            //定义一个动态类型，作为返回值
            dynamic data = new ExpandoObject();
            List<dynamic> list = new List<dynamic>();
            dynamic model = new ExpandoObject();
            model.ID = 1;
            model.Name = "张三";
            list.Add(model);
            data.list1 = list;
            return data;
        }

        public object Object()
        {
            //定义一个动态类型，作为返回值
            object data = new object();
            List<object> list = new List<object>();
            object model = new object();
            model.ID = 1;
            model.Name = "张三";
            list.Add(model);
            data.list1 = list;
            return data;
        }
    }