How to update the view from a viewmodel in WPF using MVVM design

Question

I am using the WFP with MVVM design for my first project and I am having the problem to update the view after I process a command from client to update the entity. At this time, the view can talks to the viewmodel but the viewmodel could not talk back to view. Anyone has any idea how to make this works? Thanks, Jdang

Answer 1

You should make the ViewModel implement INotifyPropertyChanged and fire the PropertyChanged event when the ViewModel properties change. Assuming that the UI is bound to the ViewModel properties this should work.