/// <summary>
/// Detect the USBs.
/// </summary>
/// <param name="sender"></param>
private void DetectUSBMethod(object sender)
{
USBs.Clear();
try
{
// Find in Win32_PnPEntity id that contains USBs.
ManagementObjectSearcher searcher = new ManagementObjectSearcher("root\\CIMV2", "SELECT * FROM Win32_PnPEntity WHERE PnPClass='USB'");
foreach (ManagementObject queryObj in searcher.Get())
{
if (queryObj["Name"] == null)
{
// skip
}
else if (!USBs.Contains(queryObj["Name"].ToString()))
{
if (!(queryObj["Name"].ToString().Contains("Composite")) && !(queryObj["Name"].ToString().Contains(" Hub"))) // these are USB supporting device, not USB
{
if (IsPluggedInUSB(queryObj["DeviceID"].ToString()))
{
USBs.Add(queryObj["Name"].ToString());
}
}
}
}
}
catch (ManagementException e)
{
MessageBox.Show("An error occurred while querying for WMI data: " + e.Message);
}
}
/// <summary>
/// Display message about the device removed.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void DeviceRemovedEvent(object sender, EventArrivedEventArgs e)
{
ManagementBaseObject instance = (ManagementBaseObject)e.NewEvent["TargetInstance"];
string name = instance.Properties["Name"].Value.ToString();
string output = name + " is Removed.";
App.Current.Dispatcher.Invoke((Action) delegate // Trigger action in the UI thread
{
if (VCPs.Contains(name))
{
VCPs.Remove(name);
}
else if (USBs.Contains(name))
{
USBs.Remove(name);
}
Statuses.Add(output);
});
}