What is dependency injection (DI)? How is it implemented in C#?

Question

ICSM Computer · Answer

DI is a design pattern that allows objects to receive their dependencies from external sources rather than creating them.
Benefits:
Decouples componentsImproves testabilityEnhances maintainability
Implementation Example (Manual DI):
public class EmailService {
    public void Send(string msg) =andgt; Console.WriteLine("Sent: " + msg);
}
public class Notification {
    private readonly EmailService _emailService;
    public Notification(EmailService service) {
        _emailService = service;
    }
    public void Notify(string msg) =andgt; _emailService.Send(msg);
}
In .NET Core, use built-in DI container via Startup.cs or
Program.cs.

interview

What is dependency injection (DI)? How is it implemented in C#?

ICSM Computer

Can you answer this question?

1 Answers

Liked By