If you are using the FileCopy command or sometinhg similar, execution will stop at that line until the command is completed. So you will not be able to update a progress bar or anything.

Maybe someone out there knows how to do this, i don't.

All i can suggest is that you write your own copy function. As an example. You could set the progress bars Max property to the size of the file being copied. You then copy the file in chunks. Every time you copy a chunk, you update the progress bars value by the size of the chunk being copied. I know this is a pain in the arse, but i don't know a better way.

Maybe someone else does?