Call a Method

//D is the name of the delegate
public delegate void D();
class Student
{
    public void Total()
    {
        Console.Write("Enter the first number :");
        int FirstNumber = Convert.ToInt32(Console.ReadLine());
        Console.Write("Enter the second number :");
        int SecondNumber = Convert.ToInt32(Console.ReadLine());
        int Result = FirstNumber+SecondNumber;
        Console.Write("Total :"+Result);
    }
}

class Program
{
    static void Main(string[]args)
    {
        Student stu = new Student();
        D d = new D(stu.Total);
        d.Invoke();
        Console.ReadKey();
    }
}