在一个C＃.NET控制台应用程序，什么code我可以写在屏幕上显示连接到系统的每个USB设备的VID和PID？

In a C#.net console application, what code can i write to print on the screen the VID and PID of each USB device connected to the system?

推荐答案

下面是一些code，我根据我发现到目前为止写的。有可能是一个更好的办法来做到这一点。

Here's some code I've written based on what I've found so far. There may be a better way to do this.

    public static void MyMethod()
    {                            
        System.Management.ManagementClass USBClass = new ManagementClass("Win32_USBDevice");                
        System.Management.ManagementObjectCollection USBCollection = USBClass.GetInstances();

        foreach (System.Management.ManagementObject usb in USBCollection)
        {
            string deviceId = usb["deviceid"].ToString();
            Console.WriteLine(deviceId);

            int vidIndex = deviceId.IndexOf("VID_");
            string startingAtVid = deviceId.Substring(vidIndex + 4); // + 4 to remove "VID_"                    
            string vid = startingAtVid.Substring(0, 4); // vid is four characters long
            Console.WriteLine("VID: " + vid);

            int pidIndex = deviceId.IndexOf("PID_");
            string startingAtPid = deviceId.Substring(pidIndex + 4); // + 4 to remove "PID_"                    
            string pid = startingAtPid.Substring(0, 4); // pid is four characters long
            Console.WriteLine("PID: " + pid);                                        
        }            

        Console.ReadLine();
    }