c#创建对象并动态添加属性

//动态类，可以作为基类被继承
dynamic backObj = new ExpandoObject();  //ExpandoObject 为密封类
                backObj.image0 = IMGNAMELIST0;
                backObj.image1 = IMGNAMELIST1;
                backObj.asset = ASSET;
                backObj.indexData = (dsIndex!=null)?dsIndex.Tables[0]:null;

                return new StringRespond()
                {
                    RespondSuc = true,
                    RespondString = JsonConvert.SerializeObject(backObj)
                };