Read original post at John Marshall's Blog
The current phone app I am working on is based around a pivot and to get the most out of the pivot I want to use a different appbar for each pivot item. Luckily, Microsoft has a good article on how to do it.
How to use different app bars in a single Pivot control for Windows Phone
Unfortunately, the article has a few problems. The main ones deal with a need to know. This is a pivot and this article suggests placing the appbar in App.xaml. This is a pivot and only the page with the pivot needs to know about it or cares. This also means the background code will be in App.xaml.cs which complicates things. Since most of my apps have been multilingual, the solution did not handle the binding required for the resource file.