[DllImport("kernel32.dll", SetLastError = true, CallingConvention = CallingConvention.Winapi)]
        [return: MarshalAs(UnmanagedType.Bool)]
        public static extern bool IsWow64Process(
        [In] IntPtr hProcess,
        [Out] out bool wow64Process
        );
        public static string CurrentVersionSO()
        {
            //Ottine la versione del sistema operativo (32 o 64 bit)
            try
            {
                Process p = Process.GetCurrentProcess();
                IntPtr handle = p.Handle;

                bool isWow64;
                bool risultato = IsWow64Process(handle, out isWow64);
                if (risultato == true)
                {
                    return "64";
                }
                else
                {
                    return "32";
                }
            }
            catch (Exception)
            {
                return "32";
            }
        }