Is there a way to make sure the VB net application is completely shut down?

Hi there everyone. I am migrating a VB6 prog to Vbnet, and I am looking for a way so when I press the exit button on the form, it will unload the form, and all other instances of the .exe file if there happens to be another instance. It is going to be a prog that has many forms, so I need to make sure all forms are unloaded.

Would anyone know of a way for vb.net to do that?

Thanks!