If I have an 2003 Excel document open in Excel, and open it with Aspose, it opens fine (I'm assuming in Read-Only).
However, if I open a 2007 Excel document in Excel, and I try to use Aspose with it, I get:
System.IO.IOException was unhandled
Message="The process cannot access the file 'test.xlsm' because it is being used by another process."
How do I force them to be opened as read-only?