继承XmlSerializer C#

Question

我有这三个班:

Class Image : Asset
Class Sound : Asset
Class Video : Asset

一切都序列化好,但当我创建这个项目时:

Class Master
List<Asset> assets //property

例如,这个类的一个实例:

Image i = new Image();
Sound s = new Sound();
Video v = new Video();
Master m =  new Master( new List<Asset>{i,s,v} )

它没有序列化异常"InvalidOperationException - 生成XML文档时出错",并且在innerException中:{"不期望MyApplication.Video类型.使用XmlInclude或SoapInclude属性指定静态未知的类型." }

.. 任何的想法？？

Answer 1

XmlInclude在Asset类上添加属性:

[XmlInclude(typeof(Video))]
[XmlInclude(typeof(Sound))]
[XmlInclude(typeof(Image))]
public class Asset
{
    ...
}