Wpf itemssource not updating
But one more issue with i OS is that when you exit the app by pressing the Home button, the app is actually in the suspended state and a snapshot of the current page is saved.
So when you restart the app, the last snapshot stored is displayed.
xaml looks fine other wise , when Raise Property Changed is invokes, it notifes the control that Server proerty has changed and needs to bind,as you said this is a hack.
How wpf combobox works is it will listen to collection change event of the observable collection, and updates the UI.
At this point, it seems that the only viable approach would be to change the column visibility in code-behind, which we usually prefer to avoid when using the MVVM pattern…