How can I get WiX to call a method in a .NET assembly as part of the installation process?

Question

I'm migrating some existing products to use WiX 3.5 (I'm using the Votive VS integration). Some of the items I'm installing need to be registered with a third-party framework. The requirement is that I must call a Register() method in a third party .NET assembly to inform it of the presence of the items I'm installing. It expects a COM ProgID.

I can't figure out how to get WiX to do this. I thought about creating a binary Custom Action, but I can't find a way of passing a parameter (a string containing the ProgID) into that custom action. I don't want to hard-code it because I need this to be re-usable code. I can't see a way to do this declaratively because the Register() function is a 'black box'.

Man this is a steep learning curve. What's my best approach here?

Answer 1

Am using a sort of what you have described.

I use to call CustomAction(events) when required. Like on clicking button you can call a method which will do work for you.