3. Delegates, Events, and Lambdas

Overview

In this chapter, you will learn how delegates are defined and invoked, and you will explore their wide usage across the .NET ecosystem. With this knowledge, you will move on to the inbuilt Action and Func delegates to discover how their usage reduces unnecessary boilerplate code. You will then see how multicast delegates can be harnessed to send messages to multiple parties, and how events can be incorporated into event-driven code. Along the way, you will discover some common pitfalls to avoid and best practices to follow that prevent a great application from turning into an unreliable one.

This chapter will demystify the lambda syntax style and show how it can be used effectively. By the end of the chapter, you will be able to use the lambda syntax comfortably to create code that is succinct, as well as easy to grasp and maintain.