using?System;
using?System.Collections.Generic;
using?System.Linq;
using?System.Text;
using?System.Management;
using?System.Text.Regularexpressions;
using?System.Windows.Forms;

namespace?test
{
????///?

????///?即插即用設(shè)備信息結(jié)構(gòu)
????///?

?????
????public?struct?PnPEntityInfo
????{
????????public?String?PNPDeviceID;??????//?設(shè)備ID
????????public?String?Name;?????????????//?設(shè)備名稱
????????public?String?Description;??????//?設(shè)備描述
????????public?String?Service;??????????//?服務(wù)
????????public?String?Status;???????????//?設(shè)備狀態(tài)
????????public?UInt16?VendorID;?????????//?供應(yīng)商標(biāo)識(shí)
????????public?UInt16?ProductID;????????//?產(chǎn)品編號(hào)?
????????public?Guid?ClassGuid;??????????//?設(shè)備安裝類GUID
????}?
????///?

????///?基于WMI獲取USB設(shè)備信息
????///?

????public?partial?class?USB
????{
????????#region?UsbDevice
????????///?

????????///?獲取所有的USB設(shè)備實(shí)體（過(guò)濾沒(méi)有VID和PID的設(shè)備）
????????///?

????????public?static?PnPEntityInfo[]?AllUsbDevices
????????{
????????????get
????????????{
????????????????return?WhoUsbDevice（UInt16.MinValue?UInt16.MinValue?Guid.Empty）;
????????????}
????????}

????????///?

????????///?查詢USB設(shè)備實(shí)體（設(shè)備要求有VID和PID）
????????///?

????????///?供應(yīng)商標(biāo)識(shí)，MinValue忽視
????????///?產(chǎn)品編號(hào)，MinValue忽視
????????///?設(shè)備安裝類Guid，Empty忽視
????????///?設(shè)備列表

????????public?static??int?numb;//統(tǒng)計(jì)usb設(shè)備數(shù)量??????????
????????public?static?PnPEntityInfo[]?WhoUsbDevice（UInt16?VendorID?UInt16?ProductID?Guid?ClassGuid）
????????{
????????????numb?=?0;

????????????List?UsbDevices?=?new?List（）;

????????????//?獲取USB控制器及其相關(guān)聯(lián)的設(shè)備實(shí)體
????????????ManagementobjectCollection?USBControllerDeviceCollection?=?new?ManagementobjectSearcher（“SELECT?*?FROM?Win32_USBControllerDevice“）.Get（）;
????????????if?（USBControllerDeviceCollection?!=?null）
????????????{
????????????????foreach?（Managementobject?USBControllerDevice?in?USBControllerDeviceCollection）
????????????????{???//?獲取設(shè)備實(shí)體的DeviceID
????????????????????String?Dependent?=?（USBControllerDevice[“Dependent“]?as?String）.Split（new?Char[]?{?‘=‘?}）[1];

????????????????????//?過(guò)濾掉沒(méi)有VID和PID的USB設(shè)備
????????????????????Match?match?=?Regex.Match（Dependent?“VID_[0-9|A-F]{4}&PID_[0-9|A-F]{4}“）;
????????????????????if?（match.Success）
????????????????????{
????????????????????????UInt16?theVendorID?=?Convert.ToUInt16（match.Value.Substring（4?4）?16）;???//?供應(yīng)商標(biāo)識(shí)
????????????????????????if?（VendorID?!=?UInt16.MinValue?&&?VendorID?!=?theVendorID）?continue;

????????????????????????UInt16?theProductID?=?Convert.ToUInt16（match.Value.Substring（13?4）?16）;?//?產(chǎn)品編號(hào)
????????????????????????if?（ProductID?!=?UInt16.MinValue?&&?ProductID?!=?theProductID）?continue;

????????????????????????ManagementobjectCollection?PnPEntityCollection?=?new?ManagementobjectSearcher（“SELECT?*?FROM?Win32_PnPEntity?WHERE?DeviceID=“?+?Depend