How can I add a probingPath at runtime (and not through app.config)?

Question

I need to add an assembly probing path at runtime, not through the element in app.config. Is there a way to do this?

The reason is so that my XOML-only workflow that resides in it's own folder can know where to find it's related DLLs (i.e. containing custom Activities). Currently I am getting fusion errors because the CLR is probing the wrong paths.

Answer 1

Basically what you are trying to do is something like what this question is about. Resolving assemblies that is not found by probing is done by hooking up with the AppDomain.AssemblyResolve event.

Whether you can use this approach to load activity assemblies requested by your workflow depends on whether a central event handler can figure out where to look for those assemblies given the workflow it tries to load.