Similar to Errors when calling certain Excel VBA macros from C#, I want to implement an error handler that will catch VBA errors and return gracefully.
Basically, I'm opening up an arbitrary macro workbook in Excel, and if the macro fails (i.e. you get a VBA error dialog with "end" and "debug" buttons), I want my application to handle it internally instead of using the VBA's dialogs. This is primarily so that a buggy book won't freeze processing (I'm using a queue of sorts to process multiple workbooks).
I already know about the DisplayAlerts=False property, and On Error Resume Next inserted into each routine, but I don't want to need to inject this into everything (especially since some of these workbooks may already modify the mentioned settings and reset them mid-routine!)
My best idea so far is to write up some sort of process watcher that looks for windows titled "Microsoft Visual Basic" and sendkey an "E" (to click the end button).
I've read in a few places that there's a property called Application.BreakOnVBAError that can be set to False, but it doesn't seem to exist in the interop assembly.
