Ade*_*zah 109
为您的项目添加对System.Management的引用,然后尝试这样的事情:
namespace ConsoleApplication1
{
using System;
using System.Collections.Generic;
using System.Management; // need to add System.Management to your project references.
class Program
{
static void Main(string[] args)
{
var usbDevices = GetUSBDevices();
foreach (var usbDevice in usbDevices)
{
Console.WriteLine("Device ID: {0}, PNP Device ID: {1}, Description: {2}",
usbDevice.DeviceID, usbDevice.PnpDeviceID, usbDevice.Description);
}
Console.Read();
}
static List<USBDeviceInfo> GetUSBDevices()
{
List<USBDeviceInfo> devices = new List<USBDeviceInfo>();
ManagementObjectCollection collection;
using (var searcher = new ManagementObjectSearcher(@"Select * From Win32_USBHub"))
collection = searcher.Get();
foreach (var device in collection)
{
devices.Add(new USBDeviceInfo(
(string)device.GetPropertyValue("DeviceID"),
(string)device.GetPropertyValue("PNPDeviceID"),
(string)device.GetPropertyValue("Description")
));
}
collection.Dispose();
return devices;
}
}
class USBDeviceInfo
{
public USBDeviceInfo(string deviceID, string pnpDeviceID, string description)
{
this.DeviceID = deviceID;
this.PnpDeviceID = pnpDeviceID;
this.Description = description;
}
public string DeviceID { get; private set; }
public string PnpDeviceID { get; private set; }
public string Description { get; private set; }
}
}
Dan*_*dis 37
我知道我正在回答一个老问题,但我刚刚完成了同样的练习,并找到了更多的信息,我认为这将为讨论做出很多贡献,并帮助找到这个问题的任何其他人看到现有答案不足.
该接受的答案是接近的,并且可以使用修正Nedko的评论吧.对WMI类的更详细了解有助于完成图片.
Win32_USBHub仅返回USB 集线器.事后看来这很明显,但上面的讨论错过了它.它不包括所有可能的USB设备,只有那些能够(理论上至少)充当其他设备的集线器的设备.它错过了一些不是集线器的设备(尤其是复合设备的部件).
Win32_PnPEntity确实包括所有USB设备和数百个非USB设备. Russel Gantman建议使用WHERE子句搜索Win32_PnPEntity以"USB%"开头的DeviceID来过滤列表是有帮助的,但稍微不完整; 它错过了蓝牙设备,一些打印机/打印服务器以及符合HID标准的鼠标和键盘.我看过"USB \%","USBSTOR \%","USBPRINT \%","BTH \%","SWD \%"和"HID \%". Win32_PnPEntity但是,一旦您拥有来自其他来源的PNPDeviceID,它就是一个很好的"主"参考.
我发现枚举USB设备的最佳方法是查询Win32_USBControllerDevice.虽然它没有提供有关设备的详细信息,但它确实完全枚举了您的USB设备,并为您的PNPDeviceID每个USB设备(包括集线器,非集线器设备和HID兼容设备)提供了一对前提/相关配对.系统.从查询返回的每个Dependent将是USB设备.Antecedent将是它所分配的控制器,其中一个是通过查询返回的USB控制器Win32_USBController.
作为奖励,似乎在引擎盖下,WMI 在响应查询时遍历设备树Win32_USBControllerDevice,因此返回这些结果的顺序可以帮助识别父/子关系.(这没有记录,因此只是一个猜测;使用SetupDi API的CM_Get_Parent(或Child + Sibling)获得明确的结果.)作为SetupDi API的一个选项,似乎Win32_USBHub可以查找下面列出的所有设备在注册表(at HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\ + PNPDeviceID)中,将有一个参数ParentIdPrefix,该参数将是其子节点的PNPDeviceID中的最后一个字段的前缀,因此这也可以在通配符匹配中用于过滤Win32_PnPEntity查询.
在我的申请中,我做了以下事情:
Win32_PnPEntity并将结果存储在键值映射中(以PNPDeviceID作为键),以便以后检索.如果您想稍后进行单独查询,则这是可选的.Win32_USBControllerDeviceUSB设备的我的系统上的最终名单(所有的受养人)和提取这些的PNPDeviceIDs.我根据设备树之后的顺序进一步将设备分配给根集线器(返回的第一个设备,而不是控制器),并基于parentIdPrefix构建了一个树.查询返回的顺序(通过SetupDi匹配设备树枚举)是每个根集线器(Antecedent为其识别控制器),然后是其下的设备迭代,例如,在我的系统上:
Win32_USBController.这给了我控制器的PNPDeviceID的详细信息,这些控制器位于设备树的顶部(这是前一个查询的前提).使用上一步中派生的树,递归迭代其子节点(根集线器)及其子节点(其他集线器)及其子节点(非集线器设备和复合设备)及其子节点等.
Win32_PnPEntity使用PNPDeviceId单独查询以获取此步骤的信息;可能是cpu与内存权衡,确定哪个顺序更好.)总之,Win32USBControllerDeviceDependents是系统上USB设备的完整列表(控制器本身除外,它是同一查询中的前提),并通过交互引用这些PNPDeviceId对与来自注册表和提到的其他查询的信息,可以构建详细的图片.
ocr*_*tte 12
为了查看我感兴趣的设备,我根据这篇文章替换Win32_USBHub了Win32_PnPEntityAdel Hazzah的代码.这对我有用:
namespace ConsoleApplication1
{
using System;
using System.Collections.Generic;
using System.Management; // need to add System.Management to your project references.
class Program
{
static void Main(string[] args)
{
var usbDevices = GetUSBDevices();
foreach (var usbDevice in usbDevices)
{
Console.WriteLine("Device ID: {0}, PNP Device ID: {1}, Description: {2}",
usbDevice.DeviceID, usbDevice.PnpDeviceID, usbDevice.Description);
}
Console.Read();
}
static List<USBDeviceInfo> GetUSBDevices()
{
List<USBDeviceInfo> devices = new List<USBDeviceInfo>();
ManagementObjectCollection collection;
using (var searcher = new ManagementObjectSearcher(@"Select * From Win32_PnPEntity"))
collection = searcher.Get();
foreach (var device in collection)
{
devices.Add(new USBDeviceInfo(
(string)device.GetPropertyValue("DeviceID"),
(string)device.GetPropertyValue("PNPDeviceID"),
(string)device.GetPropertyValue("Description")
));
}
collection.Dispose();
return devices;
}
}
class USBDeviceInfo
{
public USBDeviceInfo(string deviceID, string pnpDeviceID, string description)
{
this.DeviceID = deviceID;
this.PnpDeviceID = pnpDeviceID;
this.Description = description;
}
public string DeviceID { get; private set; }
public string PnpDeviceID { get; private set; }
public string Description { get; private set; }
}
}
如果将 ManagementObjectSearcher 更改为以下内容：
ManagementObjectSearcher searcher =
new ManagementObjectSearcher("root\\CIMV2",
@"SELECT * FROM Win32_PnPEntity where DeviceID Like ""USB%""");
所以“GetUSBDevices() 看起来像这样”
static List<USBDeviceInfo> GetUSBDevices()
{
List<USBDeviceInfo> devices = new List<USBDeviceInfo>();
ManagementObjectCollection collection;
using (var searcher = new ManagementObjectSearcher(@"SELECT * FROM Win32_PnPEntity where DeviceID Like ""USB%"""))
collection = searcher.Get();
foreach (var device in collection)
{
devices.Add(new USBDeviceInfo(
(string)device.GetPropertyValue("DeviceID"),
(string)device.GetPropertyValue("PNPDeviceID"),
(string)device.GetPropertyValue("Description")
));
}
collection.Dispose();
return devices;
}
}
您的结果将仅限于 USB 设备（而不是您系统上的所有类型）
Adel Hazzah的答案给出了工作代码，Daniel Widdis和Nedko的注释提到您需要查询Win32_USBControllerDevice并使用其Dependent属性，而Daniel的答案给出了很多没有代码的细节。
这是上面讨论的综合内容，以提供列出所有可连接USB设备可直接访问的PNP设备属性的工作代码：
using System;
using System.Collections.Generic;
using System.Management; // reference required
namespace cSharpUtilities
{
class UsbBrowser
{
public static void PrintUsbDevices()
{
IList<ManagementBaseObject> usbDevices = GetUsbDevices();
foreach (ManagementBaseObject usbDevice in usbDevices)
{
Console.WriteLine("----- DEVICE -----");
foreach (var property in usbDevice.Properties)
{
Console.WriteLine(string.Format("{0}: {1}", property.Name, property.Value));
}
Console.WriteLine("------------------");
}
}
public static IList<ManagementBaseObject> GetUsbDevices()
{
IList<string> usbDeviceAddresses = LookUpUsbDeviceAddresses();
List<ManagementBaseObject> usbDevices = new List<ManagementBaseObject>();
foreach (string usbDeviceAddress in usbDeviceAddresses)
{
// query MI for the PNP device info
// address must be escaped to be used in the query; luckily, the form we extracted previously is already escaped
ManagementObjectCollection curMoc = QueryMi("Select * from Win32_PnPEntity where PNPDeviceID = " + usbDeviceAddress);
foreach (ManagementBaseObject device in curMoc)
{
usbDevices.Add(device);
}
}
return usbDevices;
}
public static IList<string> LookUpUsbDeviceAddresses()
{
// this query gets the addressing information for connected USB devices
ManagementObjectCollection usbDeviceAddressInfo = QueryMi(@"Select * from Win32_USBControllerDevice");
List<string> usbDeviceAddresses = new List<string>();
foreach(var device in usbDeviceAddressInfo)
{
string curPnpAddress = (string)device.GetPropertyValue("Dependent");
// split out the address portion of the data; note that this includes escaped backslashes and quotes
curPnpAddress = curPnpAddress.Split(new String[] { "DeviceID=" }, 2, StringSplitOptions.None)[1];
usbDeviceAddresses.Add(curPnpAddress);
}
return usbDeviceAddresses;
}
// run a query against Windows Management Infrastructure (MI) and return the resulting collection
public static ManagementObjectCollection QueryMi(string query)
{
ManagementObjectSearcher managementObjectSearcher = new ManagementObjectSearcher(query);
ManagementObjectCollection result = managementObjectSearcher.Get();
managementObjectSearcher.Dispose();
return result;
}
}
}
如果需要，您需要添加异常处理。如果您想弄清楚设备树等，请查阅Daniel的回答。
对于仅寻找可移动USB驱动器的人来说,这是一个更简单的示例.
using System.IO;
foreach (DriveInfo drive in DriveInfo.GetDrives())
{
if (drive.DriveType == DriveType.Removable)
{
Console.WriteLine(string.Format("({0}) {1}", drive.Name.Replace("\\",""), drive.VolumeLabel));
}
}
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