Download Dependency Injection in .NET by Mark Seemann PDF

By Mark Seemann

Precis Dependency Injection in .NET offers middle DI styles in undeniable C#, so you will totally know the way DI works, covers integration with average Microsoft applied sciences like ASP.NET MVC, and teaches you to exploit DI frameworks like constitution Map, fort Windsor, and cohesion. in regards to the TechnologyDependency Injection is a smart method to lessen tight coupling among software program parts. rather than hard-coding dependencies, resembling specifying a database motive force, you inject a listing of providers part may have. The providers are then attached via a 3rd get together. this system lets you higher deal with destiny alterations and different complexity on your software program. approximately this BookDependency Injection in .NET introduces DI and gives a pragmatic consultant for employing it in .NET functions. The booklet offers the center styles in simple C#, so you will absolutely know how DI works. Then you are going to learn how to combine DI with average Microsoft applied sciences like ASP.NET MVC, and to exploit DI frameworks like StructureMap, fortress Windsor, and team spirit. by means of the tip of the booklet, you may be cozy using this robust procedure on your daily .NET development.This ebook is written for C# builders. No earlier adventure with DI or DI frameworks is needed. what is InsideMany C#-based examples A catalog of DI styles and anti-patterns utilizing either Microsoft and open resource DI frameworksTabel of ContentsPART 1 placing DEPENDENCY INJECTION at the MAP A Dependency Injection tasting menu A accomplished instance DI packing containers half 2 DI CATALOG DI styles DI anti-patterns DI refactorings half three DIY DI item Composition item Lifetime Interception half four DI bins citadel Windsor StructureMap Spring.NET Autofac harmony MEF

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Today, I think of DI as encompassing all three in a consistent way. OBJECT COMPOSITION tends to dominate the picture because, without flexible OBJECT COMPOSITION, there would be no INTERCEPTION and no need to manage OBJECT LIFETIME. OBJECT COMPOSITION has dominated most of this chapter, and will continue to dominate the book, but we shouldn’t forget the other aspects. OBJECT COMPOSITION provides the foundation and LIFETIME MANAGEMENT addresses some important side effects, but it’s mainly when it comes to INTERCEPTION that we start to reap the benefits.

According to the LISKOV SUBSTITUTION PRINCIPLE, the consumer must treat all instances of a given interface equally. Because DEPENDENCIES may be shared, a single consumer can’t possibly control its lifetime. As long as a managed object can go out of scope and be garbage collected, this isn’t much of an issue, but when DEPENDENCIES implement the IDisposable interface, things become much more complicated. As a whole, LIFETIME MANAGEMENT is a separate dimension of DI and important enough that I’ve set aside all of chapter 8 for it.

What’s amazing about the socket and plug model is that, over decades, it’s proven to be an easy and versatile model. Once the infrastructure is in place, it can be used by anyone and adapted to changing needs and unpredicted requirements. What’s even more interesting is that, when we relate this model to software development, all the building blocks are already in place in the form of design principles and patterns. Loose coupling can make a code base much more maintainable. That’s the easy part.

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