Book Image

Mastering Ninject for Dependency Injection

By : Daniel Baharestani
Book Image

Mastering Ninject for Dependency Injection

By: Daniel Baharestani

Overview of this book

Dependency injection is an approach to creating loosely coupled applications. Maintainability, testability, and extensibility are just a few advantages of loose coupling. Ninject is a software library which automates almost everything that we need in order to implement a dependency injection pattern. Mastering Ninject for Dependency Injection will teach you everything you need to know in order to implement dependency injection using Ninject in a real-life project. Not only does it teach you about Ninject core framework features that are essential for implementing dependency injection, but it also explores the power of Ninject's most useful extensions and demonstrates how to apply them. Mastering Ninject for Dependency Injection starts by introducing you to dependency injection and what it's meant for with the help of sufficient examples. Eventually, you'll learn how to integrate Ninject into your practical project and how to use its basic features. Also, you will go through scenarios wherein advanced features of Ninject, such as Multi-binding, Contextual binding, providers, factories and so on, come into play. As you progress, Mastering Ninject for Dependency Injection will show you how to create a multilayer application that demonstrates the use of Ninject on different application types such as MVC, WPF, WCF, and so on. Finally, you will learn the benefits of using the powerful extensions of Ninject.
Table of Contents (12 chapters)

Extending Ninject


Ninject is actually a collection of single responsible components that are wired together using DI. This makes it extremely extensible, and thus new functionalities are created by adding new components and the existing behaviors can easily be customized by swapping standard components with our customized ones. All of the Ninject components are available via the kernel.Components property. We can also create a customized Kernel object by extending the KernelBase class or even implementing the IKernel interface. In order to extend Ninject behaviors, we need to know Ninject components and their roles. Going through all of those components is out of the scope of this book. However, we will have an example to see how to extend Ninject by adding a new component.

In the following example we will create a new IMissingBindingResolver component and add it to Ninject components. IMissingBindingResolver, as the name suggests, is responsible for resolving types for which there are...