Integer conversion

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

namespace ConConversion
{
    class Program
    {
        //Again I needed to change this method to static method, so we can get input paramether from Main method
        //I didnt use Convert or Pharse, just simply use ASCII enconding
        //By ASCII enconding we are avoiding the undesirable characteristics
        //All will be changed to number even numbers
        //I am sure, that I could use here Try and Cath, and make exception (outOfRange) for undesirable characteristics
        //But still I think this is better way
        static public int ConvertToInt(string value)
        {
            int sum = 0;
            byte[] asciiBytes = Encoding.ASCII.GetBytes(value);
            foreach (byte b in asciiBytes)
            {
                //Writing each number for every characteristic
                Console.Write(b + ", ");
                //In the end I sum all numbers to one
                sum += b;
            }
            Console.WriteLine();
            Console.WriteLine("And the finally number is:" + sum);

            return sum;
        }

        static void Main(string[] args)
        {
            string value = "";
            Console.WriteLine("Write your numbers/characters.");
            value = Convert.ToString(Console.ReadLine());
            ConvertToInt(value);


            //I am sure, that I could by this check if are there any letter, if result==true, I shold close application.
            /*bool result = !value.Any(x => char.IsLetter(x));
            if (result == true)
            Console.WriteLine("True");
            else
            Console.WriteLine("False"); */
        }
    }
}