program.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Oef2Omkeren
{
    class Program
    {
        static void Main(string[] args)
        {
            Business w1 = new Business();
            Console.WriteLine("Geef een woord");
            string naam = Console.ReadLine();
            Console.ForegroundColor = ConsoleColor.Blue;
            string output = w1.Omkeren(naam);
            Console.WriteLine(output);
            Console.WriteLine();
            if (output == naam)
            {
                Console.ForegroundColor = ConsoleColor.Cyan;
                Console.WriteLine("Je hebt een palindroom");
            }
            Console.ReadLine();


        }
    }
}
business.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Oef2Omkeren
{
    class Business
    {
        public string Omkeren(string pinvoer)
        {
            //return new string(pwoord.Reverse().ToArray());
            string resultaat = "";
            for (int teller = pinvoer.Length - 1; teller >= 0; teller--)
            {
                resultaat += pinvoer[teller];

            }
            return resultaat;
        }
    }
}