c# - How to serialize generic inheritance class types with protobuf-net

Question

I've got a rather complex model structure and I'm hoping I can implement the serialization with protobuf-net. I've written a couple of tests and most of them work absolutely fine, but some more complex generic class structures with inheritance on both the class type and the generic type don't work.

In the example below, the models don't have constructors, but I left them out to not overflow the post with information. Please assume that the parameterless constructors are implemented in all models. Also, I'm aware that some property names don't make sense, but it's a simplified prototype for a bigger project.

note: I know that this model is probably overcomplicated, but unfortunately I'm hugely stuck with it.

Models

[ProtoContract]
public class SaveData
{
    [ProtoMember(1)]
    public List<Entity> entities { get; set; }
}

[ProtoContract]
public abstract class Entity
{
    [ProtoMember(2)]
    public Guid ID { get; set; }
    [ProtoMember(3)]
    public string Name { get; set; }
}

[ProtoContract]
[ProtoInclude(910, typeof(SpecificEvent<SpecificEventArguments, SpecificEventContext>))]
public class Event<T, U> : Entity 
    where T : EventArguments
    where U : EventContext
{
    [ProtoMember(22)]
    public string EventName { get; set; }
    [ProtoMember(23)]
    public T EventArguments { get; set; }
    [ProtoMember(902)]
    public U EventContext { get; set; }
}

[ProtoContract]
[ProtoInclude(30, typeof(SpecificEventArguments))]
public class EventArguments
{
    [ProtoMember(24)]
    public int Argument { get; set; }
}

[ProtoContract]
[ProtoInclude(901, typeof(SpecificEventContext))]
public class EventContext
{
    [ProtoMember(900)]
    public string SomeContext { get; set; }
}

[ProtoContract]
public class SpecificEventArguments : EventArguments
{
    [ProtoMember(25)]
    public int SomeID { get; set; }
}

[ProtoContract]
public class SpecificEventContext : EventContext
{
}

[ProtoContract]
public class SpecificEvent<T, U> : Event<T, U>
    where T : SpecificEventArguments
    where U : SpecificEventContext
{
}

When I try to write some serialization logic in a simple main cmd-script, I can't seem to figure out why the serialization doesn't work.

Logic

static void Main(string[] args)
{
    SaveData saveData = new SaveData();
    SpecificEvent<SpecificEventArguments, SpecificEventContext> specificEvent = 
        new SpecificEvent<SpecificEventArguments, SpecificEventContext>(
            "specific", "event", 
            new SpecificEventArguments(1), 
            new SpecificEventContext());
    saveData.entities.Add(specificEvent);

    using (var file = File.Create("savedata.bin"))
    {
        Serializer.Serialize(file, saveData);
    }

    SaveData loaded = null;
    using (var file = File.OpenRead("savedata.bin"))
    {
        loaded = Serializer.Deserialize<SaveData>(file);
    }
}

I get the following exception:

System.InvalidOperationException: 'Unexpected sub-type: protobuf_net_test.Program+SpecificEvent`2[[protobuf_net_test.Program+SpecificEventArguments, protobuf-net-test, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null],[protobuf_net_test.Program+SpecificEventContext, protobuf-net-test, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]]'

Can anyone please explain me what I'm doing wrong? All help is really appreciated!!

Answer 1

等待大神答复