Progress Reporting in an external application

I have a custom external application that executes some packages. I would like to display the execution progress as it would appear in the Progress tab of the SSIS designer. How would I do that? Any help is appreciated.Implement IDTSEvents interface (the simplest way is inherit from DefaultEvents class, and override the methods you need), then call package.Execute(,,IDTSEvents,) method passing your object. Process the events from package and show the progress in the way you want.