文用到的开源类，百度云下载：链接：http://pan.baidu.com/s/1kVJfGsJ 密码：tkna
1、首先USB工具类DriveDetector.cs：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Management;
using System.Text;
using System.Threading.Tasks;
namespace StarsCloud.Comet.Common
{
/// <summary>
/// USB控制设备类型
/// </summary>
public struct USBControllerDevice
{
/// <summary>
/// USB控制器设备ID
/// </summary>
public String Antecedent;
/// <summary>
/// USB即插即用设备ID
/// </summary>
public String Dependent;
}
/// <summary>
/// 监视USB插拔
/// </summary>
public partial class USB
{
/// <summary>
/// USB插入事件监视
/// </summary>
private ManagementEventWatcher insertWatcher = null;
/// <summary>
/// USB拔出事件监视
/// </summary>
private ManagementEventWatcher removeWatcher = null;
/// <summary>
/// 添加USB事件监视器
/// </summary>
/// <param name="usbInsertHandler">USB插入事件处理器</param>
/// <param name="usbRemoveHandler">USB拔出事件处理器</param>
/// <param name="withinInterval">发送通知允许的滞后时间</param>
public Boolean AddUSBEventWatcher(EventArrivedEventHandler usbInsertHandler, EventArrivedEventHandler usbRemoveHandler, TimeSpan withinInterval)
{
try
{
ManagementScope Scope = new ManagementScope("root\\CIMV2");
Scope.Options.EnablePrivileges = true;
// USB插入监视
if (usbInsertHandler != null)
{
WqlEventQuery InsertQuery = new WqlEventQuery("__InstanceCreationEvent",
withinInterval,
"TargetInstance isa 'Win32_USBControllerDevice'");
insertWatcher = new ManagementEventWatcher(Scope, InsertQuery);
insertWatcher.EventArrived += usbInsertHandler;
insertWatcher.Start();
}
// USB拔出监视
if (usbRemoveHandler != null)
{
WqlEventQuery RemoveQuery = new WqlEventQuery("__InstanceDeletionEvent",
withinInterval,
"TargetInstance isa 'Win32_USBControllerDevice'");
removeWatcher = new ManagementEventWatcher(Scope, RemoveQuery);
removeWatcher.EventArrived += usbRemoveHandler;
removeWatcher.Start();
}
return true;
}
catch (Exception)
{
RemoveUSBEventWatcher();
return false;
}
}
/// <summary>
/// 移去USB事件监视器
/// </summary>
public void RemoveUSBEventWatcher()
{
if (insertWatcher != null)
{
insertWatcher.Stop();
insertWatcher = null;
}
if (removeWatcher != null)
{
removeWatcher.Stop();
removeWatcher = null;
}
}
/// <summary>
/// 定位发生插拔的USB设备
/// </summary>
/// <param name="e">USB插拔事件参数</param>
/// <returns>发生插拔现象的USB控制设备ID</returns>
public static USBControllerDevice[] WhoUSBControllerDevice(EventArrivedEventArgs e)
{
ManagementBaseObject mbo = e.NewEvent["TargetInstance"] as ManagementBaseObject;
if (mbo != null && mbo.ClassPath.ClassName == "Win32_USBControllerDevice")
{
String Antecedent = (mbo["Antecedent"] as String).Replace("\"","").Split(new Char[] { '=' })[1];
String Dependent = (mbo["Dependent"] as String).Replace("\"", "").Split(new Char[] { '=' })[1];
return new USBControllerDevice[1] { new USBControllerDevice { Antecedent = Antecedent, Dependent = Dependent } };
}
return null;
}
}
}
2、在wpf或者控件窗口cs中，调用：
Common.USB ezUSB = new Common.USB();
bool IsOpeningCamera = false;
DateTime Benginopen = DateTime.Now;
注意：因为usb拔插的时候，事件会触发3次，我这里用一个时间戳记录，在10秒范围内的usb拔插就不处理了。当然也有问题。
注册事件：
ezUSB.AddUSBEventWatcher(USBEventHandler, USBEventHandler, new TimeSpan(0, 0,3));
3、事件实现：
private void USBEventHandler(Object sender, EventArrivedEventArgs e)
{
if (e.NewEvent.ClassPath.ClassName == "__InstanceCreationEvent")
{
foreach (USBControllerDevice Device in Common.USB.WhoUSBControllerDevice(e))
{
int i = 0;
Match match = Regex.Match(Device.Dependent, "VID_[0-9|A-F]{4}&PID_[0-9|A-F]{4}");
if (match.Success)
{
HIDD_VIDPID Entity;
Entity.VendorID = Convert.ToUInt16(match.Value.Substring(4, 4), 16); // 供应商标识
Entity.ProductID = Convert.ToUInt16(match.Value.Substring(13, 4), 16); // 产品编号
PnPEntityInfo[] model = Splash.IO.PORTS.USB.WhoPnPEntity(Device.Dependent);
if (model != null && model.Length > 0)
{//得到一个usb设备
foreach (PnPEntityInfo pn in model)
{
if (pn.Description.IndexOf(StaticResourceHandller.化学相机名称.值) >= 0 && pn.Name.Trim().IndexOf(StaticResourceHandller.化学相机描述.值) >= 0)
{
//MessageBox.Show(pn.Description);
if (IsOpeningCamera == false)
{
IsOpeningCamera = true;
this.Dispatcher.Invoke(new Action(() => {
if (Benginopen.AddSeconds(15) < DateTime.Now)
{
Benginopen = DateTime.Now;
cameraOpen(true);
}
IsOpeningCamera = false;
}));
}
}
else if (pn.Description.IndexOf(StaticResourceHandller.化学Com匹配描述.值) >= 0)
{
//MessageBox.Show(pn.Description);
if (IsOpeningCamera == false)
{
IsOpeningCamera = true;
if (Benginopen.AddSeconds(15) < DateTime.Now)
{
Benginopen = DateTime.Now;
//取出com口
string comname = pn.Name.Replace(StaticResourceHandller.Com匹配描述.值, "").Replace("(","").Replace(")", "").Trim();
List<PnPEntityInfo> allexitescom = model.Where(a => a.Name.Replace(StaticResourceHandller.干化学Com匹配描述.值, "").Replace("(", "").Replace(")", "").Trim()==
StaticResourceHandller.Com口.值
).ToList();//看一下有没有相同的端口配置。有的话，说明配置了，
if (StaticResourceHandller.镜Com口.值 != comname )
{//高倍镜没有占用
StaticResourceHandller.配置化学com口(comname);
}
}
IsOpeningCamera = false;
}
}
}
}
}
}
}
else if (e.NewEvent.ClassPath.ClassName == "__InstanceDeletionEvent")
{
// this.SetText("USB拔出时间：" + DateTime.Now + "\r\n");
}
// this.SetText("USB插入时间：" + DateTime.Now + "\r\n");
// this.SetText("\tAntecedent：" + Device.Antecedent + "\r\n");
// this.SetText("\tDependent：" + Device.Dependent + "\r\n");
}