SummaryDependency Injection Principles, Practices, and Patterns teaches you to use DI to reduce hard-coded dependencies between application components. You'll start by learning what DI is and what types of applications will benefit from it. Then, you'll work through concrete scenarios using C# and the .NET framework to implement DI in your own projects. As you dive into the thoroughly-explained examples, you'll develop a foundation you can apply to any of the many DI libraries for .NET and .NET Core.Purchase of the print book includes a free eBook in PDF, Kindle, and ePub formats from Manning Publications.About the TechnologyDependency Injection (DI) is a great way to reduce tight coupling between software components. Instead of hard-coding dependencies, such as specifying a database driver, you make those connections through a third party. Central to application frameworks like ASP.NET Core, DI enables you to better manage changes and other complexity in your software.About the BookDependency Injection Principles, Practices, and Patterns is a revised and expanded edition of the bestselling classic Dependency Injection in .NET. It teaches you DI from the ground up, featuring relevant examples, patterns, and anti-patterns for creating loosely coupled, well-structured applications. The well-annotated code and diagrams use C# examples to illustrate principles that work flawlessly with modern object-oriented languages and DI libraries.What's Inside

• Refactoring existing code into loosely coupled code
• DI techniques that work with statically typed OO languages
• Integration with common .NET frameworks
• Updated examples illustrating DI in .NET Core

About the ReaderFor intermediate OO developers.About the AuthorsMark Seemann is a programmer, software architect, and speaker who has been working with software since 1995, including six years with Microsoft. Steven van Deursen is a seasoned .NET developer and architect, and the author and maintainer of the Simple Injector DI library.Table of ContentsPART 1 Putting Dependency Injection on the map

The basics of Dependency Injection: What, why, and how

Writing tightly coupled code

Writing loosely coupled code

PART 2 Catalog

DI patterns

DI anti-patterns

Code smells

PART 3 Pure DI

Application composition

Object lifetime

Interception

Aspect-Oriented Programming by design

Tool-based Aspect-Oriented Programming

PART 4 DI Containers

DI Container introduction

The Autofac DI Container

The Simple Injector DI Container

The Microsoft.Extensions.DependencyInjection DI Container