Лучший способ обнаружить вставку DVD в привод С#

вы можете попробовать с этим кодом:

public void networkDevice()
{
    try
    {
        WqlEventQuery q = new WqlEventQuery();
        q.EventClassName = "__InstanceModificationEvent";
        q.WithinInterval = new TimeSpan(0, 0, 1);
        q.Condition = @"TargetInstance ISA 'Win32_LogicalDisk' and TargetInstance.DriveType = 5";

        ConnectionOptions opt = new ConnectionOptions();
        opt.EnablePrivileges = true;
        opt.Authority = null;
        opt.Authentication = AuthenticationLevel.Default;
        //opt.Username = "Administrator";
        //opt.Password = "";
        ManagementScope scope = new ManagementScope("\\root\\CIMV2", opt);

        ManagementEventWatcher watcher = new ManagementEventWatcher(scope, q);
        watcher.EventArrived += new EventArrivedEventHandler(watcher_EventArrived);
        watcher.Start();
    }
    catch (ManagementException e)
    {
        Console.WriteLine(e.Message);
    }
}

void watcher_EventArrived(object sender, EventArrivedEventArgs e)
{
    ManagementBaseObject wmiDevice = (ManagementBaseObject)e.NewEvent["TargetInstance"];
    string driveName = (string)wmiDevice["DeviceID"];
    Console.WriteLine(driveName);
    Console.WriteLine(wmiDevice.Properties["VolumeName"].Value);
    Console.WriteLine((string)wmiDevice["Name"]);
    if (wmiDevice.Properties["VolumeName"].Value != null)
        Console.WriteLine("CD has been inserted");
    else
        Console.WriteLine("CD has been ejected");
}

если он работает на вашем компьютере и не работает на любом другом компьютере с Windows, вам необходимо перестроить/починить/перерегистрировать классы WMI этой машины. Это поможет вам в этом.

См. следующий код:

foreach (DriveInfo drive in DriveInfo.GetDrives().Where(d => d.DriveType == DriveType.CDRom))  
    MessageBox.Show(drive.Name + " " + drive.IsReady.ToString());  

Справочная ссылка:

http://social.msdn.microsoft.com/Forums/en-US/csharpgeneral/thread/1ecb74cd-d193-40f5-9aa3-47a3c9adb4ea/

Ссылка на стек:

Определение наличия диска в DVD-приводе

Я собираюсь со следующим решением. Это 100% управляемое решение. Он не использует WMI и прекрасно работает.

internal class DriveWatcher
{
    public delegate void OpticalDiskArrivedEventHandler(Object sender, OpticalDiskArrivedEventArgs e);

    /// <summary>
    ///     Gets or sets the time, in seconds, before the drive watcher checks for new media insertion relative to the last occurance of check.
    /// </summary>
    public int Interval = 1;

    private Timer _driveTimer;

    private Dictionary<string, bool> _drives;

    private bool _haveDisk;

    /// <summary>
    ///     Occurs when a new optical disk is inserted or ejected.
    /// </summary>
    public event OpticalDiskArrivedEventHandler OpticalDiskArrived;

    private void OnOpticalDiskArrived(OpticalDiskArrivedEventArgs e)
    {
        OpticalDiskArrivedEventHandler handler = OpticalDiskArrived;
        if (handler != null) handler(this, e);
    }

    public void Start()
    {
        _drives = new Dictionary<string, bool>();
        foreach (
            DriveInfo drive in
                DriveInfo.GetDrives().Where(driveInfo => driveInfo.DriveType.Equals(DriveType.CDRom)))
        {
            _drives.Add(drive.Name, drive.IsReady);
        }
        _driveTimer = new Timer {Interval = Interval*1000};
        _driveTimer.Elapsed += DriveTimerOnElapsed;
        _driveTimer.Start();
    }

    public void Stop()
    {
        if (_driveTimer != null)
        {
            _driveTimer.Stop();
            _driveTimer.Dispose();
        }
    }

    private void DriveTimerOnElapsed(object sender, ElapsedEventArgs elapsedEventArgs)
    {
        if (!_haveDisk)
        {
            try
            {
                _haveDisk = true;
                foreach (DriveInfo drive in from drive in DriveInfo.GetDrives()
                                            where drive.DriveType.Equals(DriveType.CDRom)
                                            where _drives.ContainsKey(drive.Name)
                                            where !_drives[drive.Name].Equals(drive.IsReady)
                                            select drive)
                {
                    _drives[drive.Name] = drive.IsReady;
                    OnOpticalDiskArrived(new OpticalDiskArrivedEventArgs {Drive = drive});
                }
            }
            catch (Exception exception)
            {
                Debug.Write(exception.Message);
            }
            finally
            {
                _haveDisk = false;
            }
        }
    }
}

internal class OpticalDiskArrivedEventArgs : EventArgs
{
    public DriveInfo Drive;
}

Вы можете использовать это следующим образом.

var driveWatcher = new DriveWatcher();
driveWatcher.OpticalDiskArrived += DriveWatcherOnOpticalDiskArrived;
driveWatcher.Start();

private void DriveWatcherOnOpticalDiskArrived(object sender, OpticalDiskArrivedEventArgs e)
{
    MessageBox.Show(e.Drive.Name);
}