如何在服务中插入和删除 USB 磁盘驱动器事件，而不会听到我的硬盘驱动器在某些操作系统上被重复访问？

发布于 2024-07-05 07:07:26 字数 512 浏览 3 评论 0原文

我在 Windows 服务中使用此代码来通知插入和移除 USB 磁盘驱动器：

WqlEventQuery query = new WqlEventQuery("__InstanceOperationEvent", 
    "TargetInstance ISA 'Win32_LogicalDisk' AND TargetInstance.DriveType=2");
query.WithinInterval = TimeSpan.FromSeconds(1);
_deviceWatcher = new ManagementEventWatcher(query);
_deviceWatcher.EventArrived += new EventArrivedEventHandler(OnDeviceEventArrived);
_deviceWatcher.Start();

它适用于 XP 和 Vista，但在 XP 上我可以听到每秒访问硬盘驱动器时非常明显的声音。是否有另一个 WMI 查询可以为我提供没有声音效果的事件？

原文

I use this code in my Windows Service to be notified of USB disk drives being inserted and removed:

WqlEventQuery query = new WqlEventQuery("__InstanceOperationEvent", 
    "TargetInstance ISA 'Win32_LogicalDisk' AND TargetInstance.DriveType=2");
query.WithinInterval = TimeSpan.FromSeconds(1);
_deviceWatcher = new ManagementEventWatcher(query);
_deviceWatcher.EventArrived += new EventArrivedEventHandler(OnDeviceEventArrived);
_deviceWatcher.Start();

It works on XP and Vista, but on XP I can hear the very noticeable sound of the hard drive being accessed every second. Is there another WMI query that will give me the events without the sound effect?

分享到QQ

分享到微博

如果你对这篇内容有疑问，欢迎到本站社区发帖提问参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。

发布评论

需要登录才能够评论，你可以免费注册一个本站的账号。

凉城已无爱 2024-07-12 07:07:26

不确定这是否适用于您的情况，但我们一直在 C# 代码（我无法在此处发布）中使用 RegisterDeviceNotification 来检测 USB 设备何时插入。您必须导入一些本机函数，但通常它效果很好。最简单的方法是先在 C++ 中运行，然后看看需要将哪些内容升级到 C#。

koders 代码搜索上有一些内容似乎是一个完整的 C# 设备管理模块，可能会有所帮助：

https://web.archive.org/web/20100329155804/http://www.koders.com/csharp/fidEF5C6B3E2F46BE9AAFC93DB75515DEFC46 DB4101.aspx

回复收藏 0 原文

So要识趣 2024-07-12 07:07:26

尝试查找 InstanceCreationEvent，它将发出创建新 Win32_LogicalDisk 实例的信号。现在您正在查询实例操作，而不是创建。您应该知道这些事件的查询间隔相当长 - USB 插入和拔出的速度可能比您检测到的速度更快。

回复收藏 0 原文

愚人国度 2024-07-12 07:07:26

尝试这个

using System;
using System.Management;

namespace MonitorDrives
{
class Program
{
    public enum EventType
    {
        Inserted = 2,
        Removed = 3
    }

    static void Main(string[] args)
    {
        ManagementEventWatcher watcher = new ManagementEventWatcher();
        WqlEventQuery query = new WqlEventQuery("SELECT * FROM Win32_VolumeChangeEvent WHERE EventType = 2 or EventType = 3");

        watcher.EventArrived += (s, e) =>
        {
            string driveName = e.NewEvent.Properties["DriveName"].Value.ToString();
            EventType eventType = (EventType)(Convert.ToInt16(e.NewEvent.Properties["EventType"].Value));

            string eventName = Enum.GetName(typeof(EventType), eventType);

            Console.WriteLine("{0}: {1} {2}", DateTime.Now, driveName, eventName);
        };

        watcher.Query = query;
        watcher.Start();

        Console.ReadKey();
    }
}
}

try this

using System;
using System.Management;

namespace MonitorDrives
{
class Program
{
    public enum EventType
    {
        Inserted = 2,
        Removed = 3
    }

    static void Main(string[] args)
    {
        ManagementEventWatcher watcher = new ManagementEventWatcher();
        WqlEventQuery query = new WqlEventQuery("SELECT * FROM Win32_VolumeChangeEvent WHERE EventType = 2 or EventType = 3");

        watcher.EventArrived += (s, e) =>
        {
            string driveName = e.NewEvent.Properties["DriveName"].Value.ToString();
            EventType eventType = (EventType)(Convert.ToInt16(e.NewEvent.Properties["EventType"].Value));

            string eventName = Enum.GetName(typeof(EventType), eventType);

            Console.WriteLine("{0}: {1} {2}", DateTime.Now, driveName, eventName);
        };

        watcher.Query = query;
        watcher.Start();

        Console.ReadKey();
    }
}
}

回复收藏 0 原文

~没有更多了~