How can delegation of responsibility be implemented using delegates?

Delegates in C# allow passing methods as parameters, which simplifies responsibility delegation. This means one object can delegate the execution of a specific task to another object via a delegate.

Example:

public delegate void Notify(string message);

public class Process
{
    public Notify OnCompleted;

    public void Start()
    {
        // Perform task
        OnCompleted?.Invoke("Task completed");
    }
}

// Usage
var process = new Process();
process.OnCompleted = msg => Console.WriteLine(msg);
process.Start();

Here, the method called upon completion is passed via a delegate, allowing flexible behavior changes without modifying the Process class.