using System;

public class Program

{

    public static void Main()

    {

        ISampleEvents sampleEvents = new SampleClass();

        sampleEvents.SampleEvent += new SampleDelegate(TestHandler);

        sampleEvents.Invoke();

    }

    private static void TestHandler()

    {

        Console.WriteLine("This event is called when the event fires");

    }

}

public delegate void SampleDelegate();

public interface ISampleEvents

{

    event SampleDelegate SampleEvent;

    void Invoke();

}

​

public class SampleClass : ISampleEvents

    {

        public event SampleDelegate SampleEvent;

​

        public void Invoke()

        {

            if (SampleEvent != null)

            {

                SampleEvent();

            }

        }

    }

​