... patterns to build applications, including the Model View Pre-senter pattern with Windows Forms applications, and the Model View Controller pattern with ASPNET applications But with WPF, these ... use and reuse in the future Building Enterprise Applications with Windows Presentation Foundation and the Model View View- Model Pattern provides not only a solid analysis of how the MVVM pattern ... observer of the ViewModel, so as soon as the ViewModel changes, the UI updates itself For that to happen, the ViewModel must implement the INotifyPropertyChanged interface and re the PropertyChanged...