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QualiSystems Proprietary & Confidential

Wednesday, May 3, 2023

IoC Containers: Theory and PracticeBoris Modylevsky

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What is dependency?

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• Code is tightly coupled

• Difficult to isolate when testing

• Difficult to maintain:

• If I change ComponentX how to I know what else will affect? Did I break anything?

What problems do dependencies create?

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• The ability to supply (inject) an external dependency into a software component.

What is Dependency Injection?

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•Constructor•Setter•Method

Types of Dependency Injection

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Constructor Injection

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Attribute Injection

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Method Injection

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• Configuration (XML/JSON)

• Explicit

• Convention

• Auto wiring

Registration Types

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IoC Containers in .NET

AutoFac fFastInjector Hiro Maestro Munq Speedioc TinyIo

c

Caliburn.Micro Funq IfInjector MEF Ninject Spring.NE

T Unity

Catel Grace LightCore MEF2 Petite Stiletto Wind

sor

DryIoc Griffin LightInject

MicroSliver QuickInject Structure

Map No

Dynamo HaveBox LinFu Mugen SimpleInjector

StyleMVVM Unity

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Popular IoC Containers

Unity Ninject AutoFac StructureMap Windsor0

0.5

1

1.5

2

2.5

3

3.5

Downloads in millions

Downloads in millions

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Demo

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Source: http://tinyurl.com/h7qntep by Nathanael Mann

Performance Comparison

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