© Adam Freeman 2016

ADAM FREEMAN, Pro ASP.NET Core MVC , 10.1007/978-1-4842-0397-2_18

18. Dependency Injection

Adam Freeman

(1)Milton Keynes MK6 3PA, UK

In this chapter, I describe dependency injection (DI), a technique that helps create flexible applications and simplifies unit testing. Dependency injection can be a difficult topic to understand, both in terms of why it can be useful and how it is performed. To that end, I build up slowly, starting with the conventional way of building application components and gradually explaining how dependency injection works and why it matters. Table 18-1 puts dependency injection into context.

Table 18-1. Putting Dependency Injection in Context

Question

Answer

What is it?

Dependency Injection makes it easy to ...

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