How to implement Delegates in C#.NET

public delegate void MyDelegate();// Declaration
class MyClass
{
   public static void MyFunc()
   {
       Console.WriteLine("MyFunc Called from a Delegate");
   }
   public static void Main()
   {
       MyDelegate myDel = new MyDelegate(MyFunc);
       myDel();
   }
}

namespace Delegates
{
   public delegate int DelegateToMethod(int x, int y);

   public class Math
   {
       public static int Add(int a, int b)
       {
           return a + b;
       }

       public static int Multiply(int a, int b)
       {
           return a * b;
       }

       public static int Divide(int a, int b)
       {
           return a / b;
       }
   }
   public class DelegateApp
   {
       public static void Main()
       {
           DelegateToMethod aDelegate = new DelegateToMethod(Math.Add);
           DelegateToMethod mDelegate = new DelegateToMethod(Math.Multiply);
           DelegateToMethod mDelegate = new DelegateToMethod(Math.Multiply);
            DelegateToMethod dDelegate = new DelegateToMethod(Math.Divide);
           Console.WriteLine("Calling the method Math.Add() through the aDelegate object");
           Console.WriteLine(aDelegate(5, 5));
           Console.WriteLine("Calling the method Math.Multiply() through the mDelegate object");
           Console.WriteLine(mDelegate(5, 5));
           Console.WriteLine("Calling the method Math.Divide() through the dDelegate object");
           Console.WriteLine(dDelegate(5, 5));
           Console.ReadLine();
       }
   }
}