using System;

using System.Reflection;

using System.Collections.Generic;

​

var actions = new Action<int>[] { Original, Proposed };

var numbers = new int[] { 0, 1, 2, 3 };

foreach (Action<int> action in actions)

{

    foreach (int number in numbers)

    {

        try

        {

            action(number);

            Console.WriteLine($"{action.GetMethodInfo().Name}({number}) went fine!");

        }

        catch

        {

            Console.WriteLine($"{action.GetMethodInfo().Name}({number}) threw an exception!");

        }

    }

    Console.WriteLine();

}

​

// LOOK HERE!

​

static void Original(int value)

{

    if (value == 1 || value > 2)

        throw new ArgumentException();

}

​

static void Proposed(int value)

{

    if (value >= 1)

        throw new ArgumentException();

}

​