/// <summary>
/// Initializes a new instance of the <see cref="WmiChangeEventTester"/> class.
/// </summary>
public WmiChangeEventTester()
{
try
{
// Your query goes below; "KeyPath" is the key in the registry that you
// want to monitor for changes. Make sure you escape the \ character.
System.Management.WqlEventQuery query = new System.Management.WqlEventQuery(
@"SELECT * FROM RegistryValueChangeEvent
WHERE Hive = 'HKEY_LOCAL_MACHINE'
AND KeyPath = 'SOFTWARE\\Microsoft\\.NETFramework'
AND ValueName = 'InstallRoot'
");
System.Management.ManagementEventWatcher watcher = new System.Management.ManagementEventWatcher(query);
System.Console.WriteLine("Waiting for an event...");
// Set up the delegate that will handle the change event.
watcher.EventArrived += new System.Management.EventArrivedEventHandler(HandleEvent);
// Start listening for events.
watcher.Start();
// Do something while waiting for events. In your application,
// this would just be continuing business as usual.
System.Threading.Thread.Sleep(100000000);
// Stop listening for events.
watcher.Stop();
}
catch (System.Management.ManagementException managementException)
{
System.Console.WriteLine("An error occurred: " + managementException.Message);
}
}
public void DeviceRemovedHandler(object sender, System.Management.EventArrivedEventArgs e)
{
System.Management.ManagementEventWatcher removal = (System.Management.ManagementEventWatcher)sender;
var targetInstanceData = e.NewEvent.Properties["TargetInstance"];
var targetInstanceObject = (System.Management.ManagementBaseObject)targetInstanceData.Value;
foreach (var prop in targetInstanceObject.Properties)
{
if (prop.Name == "PNPDeviceID")
{
var pnpDeviceId = targetInstanceObject["PNPDeviceID"].ToString();
if (pnpDeviceId.Contains("USB\\VID_0483&PID_5740"))
{
var deviceId = targetInstanceObject["DeviceID"].ToString();
if (portExtender_.CheckDeviceRemoved())
{
removal.Stop();
portExtender_.CloseDevice();
DeviceRemovedStatusUpdate();
}
}
return;
}
}
removal.WaitForNextEvent();
}
public Form1()
{
InitializeComponent();
mgmtWtch = new System.Management.ManagementEventWatcher("Select * From Win32_ProcessStartTrace");
mgmtWtch.EventArrived += new System.Management.EventArrivedEventHandler(CheckingBlackListEvent);
mgmtWtch.Start();
}
