How can I debug an InfoPath VersionUpgrade method?

Question

I inherited an InfoPath form and need to add some more logic to the VersionUpgrade method, to convert old forms to an updated schema.

The previous caretaker had to resort to deploying the form and spitting out information via MessageBox.Show.

Is there a better way?

Answer 1

I have not worked on any VersionUpgrade methods myself, but if you go to File->Form Options->Preview, you can specify a file to use as the starting file in preview mode. If you do that and run the code in debug mode, I reckon you could walk the code in the debugger, but would that suit your scenario?