using System;

public class Program

{

    class B

    {

        public virtual int A()

        {

             return 1;

        }

    }

​

    class S : B

    {

        public override int A()

        {

             return 2;

        }

    }

    class N : B

    {

        public new int A()

        {

             return 2;

        }

    }

​

    public static void Main()

    {

        var v = new S();

        var n = new N();

        var bm = typeof(B).GetMethod("A");

        var sm = typeof(S).GetMethod("A");

        var nm = typeof(N).GetMethod("A");

        var bp = bm.MethodHandle.GetFunctionPointer();

        var sp = sm.MethodHandle.GetFunctionPointer();

        Console.WriteLine(bp==sp);

        Console.WriteLine(bm.Invoke(v, Array.Empty<object>()));

        Console.WriteLine(sm.Invoke(v, Array.Empty<object>()));

        Console.WriteLine(bm.Invoke(n, Array.Empty<object>()));

        Console.WriteLine(nm.Invoke(n, Array.Empty<object>()));

    }

}