Dependency Injection and Ways to Inject It Using .NET Core API

In this article, we are going to discuss dependency injection and its usage and benefits. We will also discuss different ways to implement dependency injection.

Prerequisites

• Basic understanding of the C# programming language.
• Understanding of Object-Oriented programming.
• Basic understanding of .NET Core.

Purpose of the Dependency Injection Design Pattern

In simple words, dependency means the object depends on another object to do some work. Using dependency injection, we can write loosely coupled classes and, because of that, our current functionality of one class does not directly depend on another class because we can easily maintain, change, and unit test code properly. It also takes care of the open-closed principle. Using abstraction and interface, we can make some future changes easily without modifying existing functionality.