在Protobuf-net中装饰中级类

Question

在protobuf-net中，哪个基类应该装饰？该类是直接子类还是最远的基类？或两者兼而有之？

[ProtoContract]
[ProtoInclude(42, typeof(Derived))] // Here?
public abstract class BaseClass { }

[ProtoContract]
[ProtoInclude(42, typeof(Derived))] // Or Here?
public abstract class Intermediary : BaseClass { }

[ProtoContract]
public class Derived : Intermediary { }

Answer 1

每个预期子类型的直接父类，而不是祖先。

所以：BaseClass需要声明Intermediary，而Intermediary需要声明Derived：

[ProtoContract]
[ProtoInclude(42, typeof(Intermediary))]
public abstract class BaseClass { }

[ProtoContract]
[ProtoInclude(42, typeof(Derived))]
public abstract class Intermediary : BaseClass { }

[ProtoContract]
public class Derived : Intermediary { }