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)

Windows Forms applications


Windows Forms is one of the most straightforward application types to implement DI. Just like Console application, it does not need special Ninject configuration. The Main method in the Program class is where we can use as a Composition Root (refer to Dependency Injection In .NET by Mark Seemann, published by Manning Publication Co.), and the framework components such as Form classes do not require to have a parameterless constructor, which makes implementation of constructor injection easily possible.

Add a new Windows Forms application to the Northwind solution, and name it Northwind.Winforms.

Add references to the Northwind.Core project, Ninject.Extensions.Conventions and Ninject.Extensions.Factory. Note that the extensions implicitly add a reference to Ninject if you are using NuGet. Otherwise, you need to add it manually.

We continue with the MainForm, which is going to have a DataGrid to show the list of customers.

Add a DataGrid and bind it to a BindingSource...