Everything in WPF is based on events, like the click and change events, and although most of them are associated with specific elements, there are some that are more generic. In this chapter, you will learn how to use window-wide, application-wide, and other kinds of generic events.
Application Events
The application events and anything that is general about the whole application will be found in App.xaml.cs file. You will see why the XAML part of it exists in Chapter 6 of this book.
public partial class App : Application
{
protected override void OnActivated(EventArgs ...
