using System;

public class Program

{

    public delegate void Adam(int i);

    public static void Main()

    {

        Adam del = (int i) => { Console.WriteLine(i); };

        del(10);

        var del1 = (int i) => { Console.WriteLine(i); };

        Console.WriteLine(del1.GetType());

        var del2 = (Action<int>)((int i) => { Console.WriteLine(i); });

        del2(100);

        Console.WriteLine("Hello World");

        AA.staticEvent += (int i) => { Console.WriteLine(i); };

        var aa = new AA();

        aa.FireEvent();

        //AA.staticEvent(1000);

    }

}

​

public interface IEvent

{

    public delegate void A();

    public event Action<int> actionEvent;       

    public int I {get;set;}

}

​

public abstract class A

{

    public abstract event Action<int> abstractEvent;

    public virtual event Action<int> virtualEvent;      

}

​

public class AA : A, IEvent

{   

    public override event Action<int> abstractEvent;

​

    public static event Action<int> staticEvent;

    public override event Action<int> virtualEvent;

​

    public event Action<int> actionEvent;   

    public int I {get;set;}

    public void FireEvent()

    {

        if(staticEvent != null)

        {

            staticEvent(1000);

            //AA.staticEvent(1000);

        }

    }

}