我编写了代码以显示所连接的USB设备的描述(名称)。一旦移除设备,则需要刷新ManagementObject并必须显示所连接的设备描述。
这是我的代码,
ManagementObjectSearcher searcher =
new ManagementObjectSearcher("SELECT * FROM Win32_USBControllerDevice");
foreach (ManagementObject mo in searcher.Get())
{
string str1 = mo["CurrentRefreshRate"].ToString();
Console.WriteLine(str1);
string dependent = mo["Dependent"].ToString();
string deviceId = dependent.Split('=')[1];
deviceId = deviceId.Replace('\"', '\'');
ManagementObjectSearcher searcher2 =
new ManagementObjectSearcher("SELECT * FROM Win32_PnPEntity Where DeviceID = " + deviceId);
foreach (ManagementObject mo2 in searcher2.Get())
{
HardwareDetails Detail = new HardwareDetails();
Detail.Description = mo2["Description"].ToString();
Detail.DeviceId = mo2["DeviceId"].ToString();
string[] str = Detail.DeviceId.Split('\\');
string Id = str[1];
if (Id.Contains('&'))
{
string[] separate = Id.Split('&');
Detail.Vid = separate[0].Contains('_') ? separate[0].Split('_')[1] : separate[0].Split('D')[1];
Detail.Pid = separate[1].Contains('_') ? separate[1].Split('_')[1] : separate[1].Split('D')[1];
//Detail.Pid = pid1[1];
}
else
{
Detail.Vid = "";
Detail.Pid = "";
}
if (list.Count > 0)
{
foreach (HardwareDetails h in list)
{
if (!(h.Description == Detail.Description))
{
list.Add(Detail);
break;
}
}
}
else
list.Add(Detail);
}
}
// remove duplicates, sort alphabetically and convert to array
HardwareDetails[] usbDevices = list.ToArray();
return usbDevices;
最佳答案
你有尝试过吗?
WqlEventQuery query = new WqlEventQuery(
"SELECT * FROM Win32_DeviceChangeEvent");
ManagementEventWatcher watcher = new ManagementEventWatcher(query);
watcher.EventArrived +=
new EventArrivedEventHandler(HandleEvent);
// Start listening for events
watcher.Start();
.........
// Stop listening for events
watcher.Stop();
并在HandleEvent中从列表中添加或删除设备
希望这可以帮助!