Disable ActiveX warning message
 

Due to an ActiveX component in an Excel spreadsheet I am opening from my .NET
project, I get the following popup window. I would like to prevent this from
popping up. Is it possible using Application.DisplayAlerts = false? I
couldn't get it to work.

"This application is about to initialize ActiveX controls that might be
unsafe. If you trust the source of this file, select OK and the controls will
be initialized using your current workspace settings."