Server.DataStorage.IncrementNumber C# (CSharp) Méthode

        public static void IncrementNumber()
        {
            unique_number++;
            var file = File.Open(AppDomain.CurrentDomain.BaseDirectory + "unique_number.txt", FileMode.Create);
            StreamWriter writer = new StreamWriter(file);
            writer.WriteLine(unique_number);
            writer.Flush();
            writer.Close();
        }