Getting exceptions from child domain to parent domain

I'm trying to figure out how I can get all unhandled exceptions from a child appdomain to the parent domain.

Just hooking childDomain.UnhandledException doesn't work since it seems to be executed in the childDomain.

An开发者_运维知识库d I've played around with domain.DoCallback but I can't figure out how do use it to get the exception back.

All ideas are most welcome.

---

I had forgot to make the class that I used in AppDomain.CreateInstanceAndUnwrap to inherit MarshalByRefObject. Everything works fine after doing so.