Help request - using different (derived-)types for serialize/deserialize (IMessagePackFormatter<Tser, Tdes>)? about messagepack-csharp

[AArnott]

I think you'll have to implement your formatter in terms of Base instead of A or B, since as you've noticed, there's no way an A formatter will be allowed to return a B. That will require that whatever node is pointing to your A/B objects actually declares the type to be Base instead of A simply for CLR type assignability rules.

[GunSharp]

Thank you mr AArnott for your reply.

I have tried to implement a formatter in terms of Base however I did not manage to make it work (my node indeed points to the base type). Somehow it doesn't seem to 'catch' my formatter when I use the formatterMap as shown in the examples.

    static readonly Dictionary<Type, object> formatterMap = new Dictionary<Type, object>()
    {
	    {typeof(Base), new MyBaseFormatter ()},
        }

However, next week, I'll give it a try again.