How Can I List All Connected USB Devices in Windows Using C#?

List connected USB devices in Windows using C#

Question:

How to identify and get information about all USB devices connected to Windows system?

Solution:

By integrating the System.Management namespace into your project, you can retrieve the list of USB devices using the following code:

<code class="language-csharp">using System;
using System.Collections.Generic;
using System.Management; // 将 System.Management 添加到您的项目引用中。

public class Program
{
    public static void Main(string[] args)
    {
        var usbDevices = GetUSBDevices();

        foreach (var usbDevice in usbDevices)
        {
            Console.WriteLine(
                $"设备 ID：{usbDevice.DeviceID}，PNP 设备 ID：{usbDevice.PnpDeviceID}，描述：{usbDevice.Description}");
        }

        Console.ReadKey();
    }

    public static List<USBDeviceInfo> GetUSBDevices()
    {
        var devices = new List<USBDeviceInfo>();

        using (var searcher = new ManagementObjectSearcher(@"Select * From Win32_USBHub"))
        using (var collection = searcher.Get())
        {
            foreach (var device in collection)
            {
                devices.Add(new USBDeviceInfo(
                    (string)device.GetPropertyValue("DeviceID"),
                    (string)device.GetPropertyValue("PNPDeviceID"),
                    (string)device.GetPropertyValue("Description")
                    ));
            }
        }
        return devices;
    }
}

public class USBDeviceInfo
{
    public USBDeviceInfo(string deviceID, string pnpDeviceID, string description)
    {
        DeviceID = deviceID;
        PnpDeviceID = pnpDeviceID;
        Description = description;
    }
    public string DeviceID { get; private set; }
    public string PnpDeviceID { get; private set; }
    public string Description { get; private set; }
}</code>

This solution uses the System.Management namespace to access the ManagementObjectSearcher class, allowing you to query the Win32_USBHub class to find USB devices. The code iterates over the returned collection to extract relevant information such as device ID, PNP device ID, and description, providing a complete list of connected USB devices.

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