I'm attempting set the NavBar title in a shared Layout dynamically using MVVM. I would like to do this within each View that implements that Layout. I know that I can use the data-title attribute on the View to set the NavBar's title at runtime; however, the reason I would like to be able to set it dynamically is so that the NavBar title can represent the application state that will change with each ajax call done within the separate views. Since the ajax calls will update the view-model, it would be convenient to have these change propagated to the NavBar's title automatically. Short of eliminating the layout and putting a separate NavBar within each View, is there a way for the View to update the Layout's NavBar on the fly?