Dependency Injection with ASP.NET MVC and Simple Injector

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I have been learning SimpleInjector for few days and it’s just awesome.  I have already written two post about it(see below link) and this post will be third post about it. In this post we are going to learn how we can do Dependency Injection with ASP.NET MVC.

For those who are reading my posts about Simple Injector Following are two previous post I have written about Simple Injector. I highly recommend to read first two post so that you can be aware about how we can configure SimpleInjector container.

Dependency Injection with Simple Injector
Singleton Instance in Simple Injector

So let’s start with creating a ASP.NET MVC Project from Visual Studio.

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Singleton Instance in SimpleInjector

Before some time I have written a blog post Dependency Injector with Simple Injector. This is a second blog post in same series. In this blog post we are going to learn How we can create a singleton Instance in Simple Injector.

What is is Singleton:

This is one of the Gang of Four creational pattern. Idea of behind the singleton pattern is to have only one instance of class of at anytime. This pattern ensures that a class will has only one instance of it and provides a global point of access to that instance.

I have already written a global blog post about that. You can find a basic example of Singleton pattern in C# from the following link.

Singleton Class in c#

How we can create Singleton Instance with SimpleInjector:

Here I’m going to create a console application with logger example. So let’s create via creating a new project like below.

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Dependency Injection with Simple Injector

Before some I have written a blog post about how to do dependency injection with StructureMap. In this post we are going to learn Simple Injector IOC library and how we can do dependency injection with Simple Injector.

About Simple Injector:

Simple Injector is a open source dependency injection library developed with C#. Followings are few characteristics of Simple Injector.

• Simple Injector is very simple to use dependency injection library support .NET 4+ framework, Silverlight 4+, Windows Phone 8, Windows 8 Including Universal apps and Mono.
• Simple Injector is easily integrated with frameworks like ASP.NET Web Forms, ASP.NET MVC, ASP.NET Web API, WCF and many more.
• It’s free and always be free. Published under MIT license.
• Simple Injector is highly optimized for performance and concurrent use.
• Simple Injector is thread safe and lock free design.
• Simple Injector has great support for generics and used lot of things of generics then any other dependency injection libraries.
• Simple Injector has a powerful diagnostic system.Currently it offers following validations
• Lifestyle Mismatch
• Short Circuit Dependencies
• Potential Single Responsibility violations
• Container Register Types
• Simple Injector is amazingly fast.
• Simple Injector is developed using Modern proven development practices such as TDD and Solid Design Principals.

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