Включаем/выключаем удаленный рабочий стол

try
{
    RegistryKey key = 
    RegistryKey.OpenRemoteBaseKey(RegistryHive.LocalMachine, TargetMachine.Name);
    key = key.OpenSubKey(@"SYSTEM\CurrentControlSet\Control\Terminal Server", true);
    object val = key.GetValue("fDenyTSConnections");
    bool state = (int)val != 0;
    if (state)
    {
        key.SetValue("fDenyTSConnections", 0, RegistryValueKind.DWord);
        MessageBox.Show("Remote Desktop is now ENABLED");
    }
    else
    {
        key.SetValue("fDenyTSConnections", 1, RegistryValueKind.DWord);
        MessageBox.Show("Remote Desktop is now DISABLED");
    }
    key.Flush();
    if (key != null)
        key.Close();
}
catch
{
    MessageBox.Show("Error toggling Remote Desktop permissions");
}