Question 1

How to integrate Unity Container with ASP.NET Web API?

Accepted Answer

Use the Unity.AspNet.WebApi package to add Unity as the dependency resolver in your Web API project. This allows you to register services and inject dependencies into controllers, though it requires configuration in the Global.asax or Startup class.

Question 2

Unity Container or Microsoft.Extensions.DependencyInjection for new .NET projects?

Accepted Answer

Choose Unity if you need advanced features like interception or convention-based registration in enterprise applications. Microsoft.Extensions.DependencyInjection is lighter and built into ASP.NET Core, making it better for standard DI needs and faster setup.

Question 3

What logging libraries does Unity support out of the box?

Accepted Answer

Unity provides packages for log4net, NLog, and Microsoft.Extensions.Logging, allowing easy integration by installing the corresponding NuGet package and configuring the container to use these logging providers.

Question 4

How to handle breaking changes when updating Unity versions?

Accepted Answer

Lock the minor version using floating version references (e.g., Version='5.x.*') as recommended in the README, and test thoroughly after updates. Check release notes or GitHub issues for migration guides due to potential breaking changes.

Question 5

Can I use Unity for dependency injection in WCF services?

Accepted Answer

Yes, the Unity.WCF package enables DI in Windows Communication Foundation services by providing a service host factory and behavior extensions, helping to decouple service implementations and manage dependencies.

Question 6

What's the difference between Unity.Container and Unity.Abstractions packages?

Accepted Answer

Unity.Abstractions contains interfaces and base classes for DI contracts, promoting abstraction and testability. Unity.Container is the core implementation, and you typically need both for full functionality, adding to setup complexity.

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