I asked you (twice) how Deck1Form was displayed, not how PlaylistForm was displayed. That said, I'm guessing that it is displayed in basically the same way. If that is the case then the issue is exactly what I thought it was: you are explicitly creating an instance and displaying it and then trying to affect it using the default instance. That means that you have two form objects: one displayed to the user and one you're making changes to. I suggest that you follow the Blog link in my signature and check out my post on default instances. Once you understand the difference, you need to decide whether you want to use default instances or not and stick to that decision.