Binding on DependencyProperty of custom User Control not updating on change

Question

I\'m having difficulties with databinding on my custom user control (s). I created an example project to highlight my problem. I\'m completely new to WPF and essentially MVV

Answer 1

Your change callback is breaking the binding.

As a skeleton: in your window you have UC.X="{Binding A}" and then in that property change (in UC) you have X=B;. This breaks the binding since in both cases you set X.

To rectify, remove change callback and add this to the label:

 Content="{Binding MinutesRemaining, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type UserControl}}}"