VS 2008 Problems with database connection

Hello all, some help here would be greatly appreciated

So basically, I'm making a system that connects to a database that contains lecturers and their details, and I've coded into my program a form that will add lecturers and a form that will remove lecturers. My only problem is that in the program, when I've added or removed a lecturer, it will still display in the program, unless I stop and start the program, then the changes will show.

I want the changes to be show instantly, what would I do so that it automatically updates or refreshes in the program?

Thank you.