Dependency Injection (Blazor Server)

By Default it is in ASP.NET

• allows to develop loosely-coupled code that is easy to maintain

• redue dependencies among classes by injecting those dependencies at run-time instead of design time technically.

• dependency injection is a way to create your dependencies outside of the class that uses it.

• we inject them from the outside, and take control about their creation away from the inside of your class.

Why does one use dependency injection?

Drawbacks

• We have to hard code everytime whenever we want to use any class/interface.

Type

1. Transient

• objects are always different; a new instance is provided to every controller and every service.
• single instance for the lifetime of the application domain.

2. Scoped

• objects are the same within a request, but different across different requests.
• single instance for the duration of the scoped request, which means per HTTP request in ASP.NET

3. Singleton

• objects are the same for every object and every request.
• single instance for the lifetime of the application domain.