C# 4.0 How-To

Chapter 15. Delegates, Events, and Anonymous Methods

IN THIS CHAPTER

• Decide Which Method to Call at Runtime

• Subscribe to an Event

• Publish an Event

• Ensure UI Updates Occur on UI Thread

• Assign an Anonymous Method to a Delegate

• Use Anonymous Methods as Quick-and-Easy Event Handlers

• Take Advantage of Contravariance

Although not directly related to user interaction per se, delegates and events form the fundamental building blocks upon which the GUI layer operates.

Delegates and events, in particular, are a way of decoupling various parts of your program. For example, by creating events for your components, they can signal changes in themselves, without needing to care about the interfaces of external components that are interested ...