C# function that takes an integer as a parameter and adds the alternate digits in the integer

public  int sumDigits(int inputValue)
        {
            //Varibale to hold the sum
            int TotalSum = 0;
            //Convert your integer to array of digits
            int[] aryDigits = Array.ConvertAll(inputValue.ToString().ToArray(), x => (int)x - 48);
            //Loop through the array take the alternative numbers
            for (int i = 0; i < aryDigits.Length; i = i + 2)
            {
                //Add the alternative numbers and then assign it to variable
                TotalSum = TotalSum + Convert.ToInt32(aryDigits[i]);

            }
            //Return the total value
            return TotalSum;
        }