TwoSum in C#

twosum.cs

using System;
using System.Diagnostics;

namespace TwoSum
{
    internal class Program
    {
        public static Tuple<int, int> TwoSum(int[] numbers, int target)
        {
            var lengthOfNumbers = numbers.Length;

            Console.WriteLine("Length is " + lengthOfNumbers);
            
            int indexValue1;
            int indexValue2;

            for (var counter = 0; counter < lengthOfNumbers; counter++)
            {
                Console.WriteLine("Counter is " + counter);
                if (numbers[counter] >= target)
                {
                    // go backwards
                    if (numbers[counter] > 0)
                    {
                        Console.WriteLine(counter);
                    }
                    else
                    {
                        Console.WriteLine("START");
                        Console.WriteLine(counter);
                    }

                }

                //Console.WriteLine("Counter " + counter + " value is " + numbers[counter]);
            }


            // once we have our result:
            var ourResult = new Tuple<int, int>(0, 0);
            return ourResult;
        }

        private static void Main(string[] args)
        {
            int[] ourNumbers = {2, 7, 11, 15};
            var ourTarget = 9;

            var ourFinalResult = TwoSum(ourNumbers, ourTarget);

            Console.WriteLine(ourFinalResult);
            Console.ReadLine();
        }
    }
}