class Program
    {
        static void Main(string[] args)
        {

            String[] post = { "25780181", "Karsten Magnusson", "Smedebakken 3", "4330", "Kr. Hvalsø" };
            String linie = String.Join(",", post);

            //Regex.Matches(linie, "([^,]),{4}([^,])");

            File.AppendAllText("/d46/db.txt", linie+"\n", Encoding.Unicode);

            Console.WriteLine("Har skrevet {0} til db.txt", linie);

            // Læser

            String[] poster = File.ReadAllLines("/d46/db.txt", Encoding.Unicode);

            // vis linier
            foreach (string linien in poster)
            {
                Console.WriteLine(linien);
            }


            foreach (string l in poster)
            {
                string[] felter = l.Split(',');
                foreach(string f in felter)
                {
                    Console.WriteLine(f);
                }
            }

        }
    }