"jack" <ja**@mrolinux.com> wrote in message news:eM**************@TK2MSFTNGP11.phx.gbl...
Hello,
I'm trying to make a program what can let me know when a USB device is added
or removed from a system. If anyone has any ideas or help that would be
great!
Thanks in advnace,
Jack
Here is a sample using the System.Management classes (and WMI).
// This code demonstrates how to monitor the UsbControllerDevice for
// the arrival of creation/operation events
using System;
using System.ComponentModel;
using System.Runtime.InteropServices;
using System.Management;
class WMIEvent {
public static void Main() {
WMIEvent we = new WMIEvent();
ManagementEventWatcher w= null;
WqlEventQuery q;
ManagementOperationObserver observer = new ManagementOperationObserver();
// Bind to local machine
ManagementScope scope = new ManagementScope("root\\CIMV2");
scope.Options.EnablePrivileges = true; //sets required privilege
try {
q = new WqlEventQuery();
q.EventClassName = "__InstanceCreationEvent";
q.WithinInterval = new TimeSpan(0,0,10);
q.Condition = @"TargetInstance ISA 'Win32_USBControllerDevice' ";
Console.WriteLine(q.QueryString);
w = new ManagementEventWatcher(scope, q);
w.EventArrived += new EventArrivedEventHandler(we.UsbEventArrived);
w.Start();
Console.ReadLine();
}
catch(Exception e) {
Console.WriteLine(e.Message);
}
finally {
w.Stop();
}
}
public void UsbEventArrived(object sender, EventArrivedEventArgs e) {
//Get the Event object and display it
foreach(PropertyData pd in e.NewEvent.Properties) {
Console.WriteLine("\n============================= =========");
Console.WriteLine("{0},{1},{2}, {3}",pd.Name, pd.Type, pd.Value, pd.Origin);
ManagementBaseObject mbo = null;
if(( mbo = pd.Value as ManagementBaseObject) != null) {
Console.WriteLine("--------------Properties------------------");
foreach(PropertyData prop in mbo.Properties)
Console.WriteLine("{0} - {1}", prop.Name, prop.Value);
}
}
}
}
Willy.
