❔ Process.Start() Retroarch Emulator C#

private void startGame()
{
    string rom = @"ROMFILES\Sega Genesis\" + lsbRoms.Text + ".zip";
    string emulator = @"EMULATOR\Sega Genesis\retroarch.exe";
    string commandline = string.Format("-L {0} {1}", @"EMULATOR\Sega Genesis\cores\genesis_plus_gx_libretro.dll");

        if (!File.Exists(emulator))
        {
            MessageBox.Show("Emulator is required to continue.", "ERROR", MessageBoxButtons.OK, MessageBoxIcon.Error);
        }

        else
        {
            Process.Start(emulator, "\"" + commandline + rom);
        }
}