Silverlight data binding to parent user control's properties with using MVVM in both controls?

You don't state where you put the breakpoint "never fired!". My guess is you placing a break point in the set mutator method of the IsCheckBoxVisible property.

I can't see all your code, so I can't work out everything, but a couple of questions.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.