O'Reilly logo

Mastering Windows Presentation Foundation by Sheridan Yuen

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Encapsulating common functionality

Probably the most commonly used interface in any WPF application would be the INotifyPropertyChanged interface, as it is required to correctly implement data binding. By providing an implementation of this interface in our base class, we can avoid having to repeatedly implement it in every single View Model class. It is therefore, a great candidate for inclusion in our base class. There are a number of different ways to implement it depending on our requirements, so let's take a look at the most basic first:

public virtual event PropertyChangedEventHandler PropertyChanged; protected virtual void NotifyPropertyChanged(string propertyName) { if (PropertyChanged != null) PropertyChanged(this, new PropertyChangedEventArgs(propertyName)); ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required