First I have to say that we are supper content with GemBox library and the speed we get assistance, well done!
For the matter itself, we’ve completely replaced Excel Interop with GemBox library except places where Excel files has macros. we have quiet a lot of customers that still use macros and the only way to run macro is by the Excel Interop (AFAIK). macros should be run in advanced on server side and not by user manual activation with buttons.
my question is if you have any plans to implement macro execution?