CODEWITHSUNDEEP
c#wpfwindows
Amanda Mitchell
Amanda Mitchell

Reputation: 2685

How do I detect when a removable disk is inserted using C#?

I'm just concerned about Windows, so there's no need to go into esoterica about Mono compatibility or anything like that.

I should also add that the app that I'm writing is WPF, and I'd prefer to avoid taking a dependency on System.Windows.Forms if at all possible.

Upvotes: 16

Views: 17746

Answers (3)

Ana Betts
Ana Betts

Reputation: 74692

There are much less cumbersome ways of doing this than using WMI polling - just capture WM_DEVICECHANGE:

http://msdn.microsoft.com/en-us/library/aa363215.aspx

Upvotes: 9

Josh Stodola
Josh Stodola

Reputation: 82523

Give this a shot...

using System;
using System.Collections.Generic;
using System.Text;
using System.Management;

namespace WMITestConsolApplication
{

    class Program
    {

        static void Main(string[] args)
        {

            AddInsertUSBHandler();
            AddRemoveUSBHandler();
            while (true) {
            }

        }

        static ManagementEventWatcher w = null;

        static void AddRemoveUSBHandler()
        {

            WqlEventQuery q;
            ManagementScope scope = new ManagementScope("root\\CIMV2");
            scope.Options.EnablePrivileges = true;

            try {

                q = new WqlEventQuery();
                q.EventClassName = "__InstanceDeletionEvent";
                q.WithinInterval = new TimeSpan(0, 0, 3);
                q.Condition = "TargetInstance ISA 'Win32_USBControllerdevice'";
                w = new ManagementEventWatcher(scope, q);
                w.EventArrived += USBRemoved;

                w.Start();
            }
            catch (Exception e) {


                Console.WriteLine(e.Message);
                if (w != null)
                {
                    w.Stop();

                }
            }

        }

        static void AddInsertUSBHandler()
        {

            WqlEventQuery q;
            ManagementScope scope = new ManagementScope("root\\CIMV2");
            scope.Options.EnablePrivileges = true;

            try {

                q = new WqlEventQuery();
                q.EventClassName = "__InstanceCreationEvent";
                q.WithinInterval = new TimeSpan(0, 0, 3);
                q.Condition = "TargetInstance ISA 'Win32_USBControllerdevice'";
                w = new ManagementEventWatcher(scope, q);
                w.EventArrived += USBInserted;

                w.Start();
            }
            catch (Exception e) {

                Console.WriteLine(e.Message);
                if (w != null)
                {
                    w.Stop();

                }
            }

        }

        static void USBInserted(object sender, EventArgs e)
        {

            Console.WriteLine("A USB device inserted");

        }

        static void USBRemoved(object sender, EventArgs e)
        {

            Console.WriteLine("A USB device removed");

        }
    }

}

Upvotes: 16

ine
ine

Reputation: 14084

The simplest way would be to create an Autoplay Handler:

http://www.codeproject.com/KB/system/AutoplayDemo.aspx

Autoplay Version 2 is a feature in Windows XP that will scan the first four levels of a removable media, when it arrives, looking for media content types (music, graphics, or video). Registration of applications is done on a content type basis. When a removable media arrives, Windows XP determines what actions to perform by evaluating the content and comparing it to registered handlers for that content.

A detailed MSDN article is also available.

Upvotes: 1

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