Voici un code qui peut être modifié pour répondre à vos besoins.
using System;
using System.Collections.Generic;
using System.Text;
using System.Management;
namespace DeviceMonitor.Event
{
/// <summary>Media watcher delegate.</summary>
/// <param name="sender"></param>
/// <param name="driveStatus"></param>
public delegate void MediaWatcherEventHandler(object sender, DeviceMonitor.Event.MediaEvent.DriveStatus driveStatus);
/// <summary>Class to monitor devices.</summary>
public class MediaEvent
{
#region Variables
/*------------------------------------------------------------------------*/
private string m_logicalDrive;
private ManagementEventWatcher m_managementEventWatcher = null;
/*------------------------------------------------------------------------*/
#endregion
#region Events
/*------------------------------------------------------------------------*/
public event MediaWatcherEventHandler MediaWatcher;
/*------------------------------------------------------------------------*/
#endregion
#region Enums
/*------------------------------------------------------------------------*/
/// <summary>The drive types.</summary>
public enum DriveType
{
Unknown = 0,
NoRootDirectory = 1,
RemoveableDisk = 2,
LocalDisk = 3,
NetworkDrive = 4,
CompactDisk = 5,
RamDisk = 6
}
/// <summary>The drive status.</summary>
public enum DriveStatus
{
Unknown = -1,
Ejected = 0,
Inserted = 1,
}
/*-----------------------------------------------------------------------*/
#endregion
#region Monitoring
/*-----------------------------------------------------------------------*/
/// <summary>Starts the monitoring of device.</summary>
/// <param name="path"></param>
/// <param name="mediaEvent"></param>
public void Monitor(string path, MediaEvent mediaEvent) {
if(null == mediaEvent) {
throw new ArgumentException("Media event cannot be null!");
}
//In case same class was called make sure only one instance is running
/////////////////////////////////////////////////////////////
this.Exit();
//Keep logica drive to check
/////////////////////////////////////////////////////////////
this.m_logicalDrive = this.GetLogicalDrive(path);
WqlEventQuery wql;
ManagementOperationObserver observer = new
ManagementOperationObserver();
//Bind to local machine
/////////////////////////////////////////////////////////////
ConnectionOptions opt = new ConnectionOptions();
//Sets required privilege
/////////////////////////////////////////////////////////////
opt.EnablePrivileges = true;
ManagementScope scope = new ManagementScope("root\\CIMV2", opt);
try {
wql = new WqlEventQuery();
wql.EventClassName = "__InstanceModificationEvent";
wql.WithinInterval = new TimeSpan(0, 0, 1);
wql.Condition = String.Format(@"TargetInstance ISA 'Win32_LogicalDisk' and TargetInstance.DeviceId = '{0}'", this.m_logicalDrive);
this.m_managementEventWatcher = new ManagementEventWatcher(scope, wql);
//Register async. event handler
/////////////////////////////////////////////////////////////
this.m_managementEventWatcher.EventArrived += new EventArrivedEventHandler(mediaEvent.MediaEventArrived);
this.m_managementEventWatcher.Start();
} catch(Exception e) {
this.Exit();
throw new Exception("Media Check: " + e.Message);
}
}
/// <summary>Stops the monitoring of device.</summary>
public void Exit() {
//In case same class was called make sure only one instance is running
/////////////////////////////////////////////////////////////
if(null != this.m_managementEventWatcher) {
try {
this.m_managementEventWatcher.Stop();
this.m_managementEventWatcher = null;
} catch {
}
}
}
/*-----------------------------------------------------------------------*/
#endregion
#region Helpers
/*-----------------------------------------------------------------------*/
private DriveStatus m_driveStatus = DriveStatus.Unknown;
/// <summary>Triggers the event when change on device occured.</summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void MediaEventArrived(object sender, EventArrivedEventArgs e) {
// Get the Event object and display it
PropertyData pd = e.NewEvent.Properties["TargetInstance"];
DriveStatus driveStatus = this.m_driveStatus;
if(pd != null) {
ManagementBaseObject mbo = pd.Value as ManagementBaseObject;
System.IO.DriveInfo info = new System.IO.DriveInfo((string)mbo.Properties["DeviceID"].Value);
driveStatus = info.IsReady ? DriveStatus.Inserted : DriveStatus.Ejected;
}
if(driveStatus != this.m_driveStatus){
this.m_driveStatus = driveStatus;
if(null != MediaWatcher) {
MediaWatcher(sender, driveStatus);
}
}
}
/// <summary>Gets the logical drive of a given path.</summary>
/// <param name="path"></param>
/// <returns></returns>
private string GetLogicalDrive(string path) {
System.IO.DirectoryInfo dirInfo = new System.IO.DirectoryInfo(path);
string root = dirInfo.Root.FullName;
string logicalDrive = root.Remove(root.IndexOf(System.IO.Path.DirectorySeparatorChar));
return logicalDrive;
}
/*-----------------------------------------------------------------------*/
#endregion
}
}
Je trouve cela sur MSDN à l'adresse:
http://social.msdn.microsoft.com/forums/en-US/csharpgeneral/thread/09912cee-4d2d-4efd-82a0-da20024b868b/