Summary
This chapter gave you the basics of delegates and
events. You learned how to declare a delegate and add methods to
the delegate list. You also learned the process of declaring event
handlers to respond to an event, as well as how to create a custom
event and use the patterns for raising the event.
As a .NET developer, you will be using delegates
and events extensively, especially when developing Windows Forms
applications. Events are the means that the .NET developer has to
monitor the various Windows messages that occur while the
application is executing. Otherwise, you would have to monitor the
WndProc and catch the WM_MOUSEDOWN
message instead of getting the mouse Click event for a button.
The use of delegates and events in the design of a
large application can reduce dependencies and the coupling of
layers. This allows you to develop components that have a higher
reusability factor.
