Pro ASP.NET Core 7, Tenth Edition

14 Using dependency injection

This chapter covers

• Understanding how dependency injection allows components to access shared services
• Configuring services lifecycles to control when services are instantiated
• Understanding how to define and access services using dependency injection

Services are objects that are shared between middleware components and endpoints. There are no restrictions on the features that services can provide, but they are usually used for tasks that are needed in multiple parts of the application, such as logging or database access.

The ASP.NET Core dependency injection feature is used to create and consume services. This topic causes confusion and can be difficult to understand. In this chapter, I describe the problems ...