Round to Even

using System;

namespace RoundToEven {
    class Program {
        static void Main(string[] args) {
            double[] numbers = { 12.5000, 12.45, 12.4, 12.6, 12.55 };
            foreach (var number in numbers) {
                Console.WriteLine("{0} \t wird zu {1}!", number, Math.Round(number, MidpointRounding.ToEven));
            }
            Console.ReadLine();
        }
    }
}