while (true)
            {
                string temp = fs.ReadLine();
                Char delimiter = ',';
                String[] substrings = temp.Split(delimiter);
                foreach (var substring in substrings)
                    Console.WriteLine(String.Join(",",substring,48));
                if (temp == null) break;
                {
                    Console.WriteLine("end");
                    Console.ReadLine();
                }

            }
    }
enter code here