<<
I really don't want to write something like
>
>container1.requery()
>container2.requery()
>...
<<

Then have a form-level requery that calls the requery of each container. I don't see the problem with that.

Personally, if I don't have to create a property, I wont. If you create a property, you have to then write code to mainain the property. Methods are far easier in this regard.

Another thing. The more "generic" you try to make things, the more complex your code becomes. The mantra simple is best comes to mind here. The more generic you make things, the more likely you are to spend $1000 to solve a $100 problem.