Set ListBoxItem.IsSelected when child TextBox is Focused

Question

I have a typical MVVM scenario: I have a ListBox that is binded to a List of StepsViewModels. I define a DataTemplate so that StepViewModels are rendered as StepViews. The

Answer 1

Edit: Someone else already had the same answer on a different question: https://stackoverflow.com/a/7555852/2484737

Continuing on Maexs' answer, using an EventTrigger instead of an EventSetter removes the need for code-behind: