C # obtain the USB event API

Const int WM_DEVICECHANGE = 0x2190;
Constint DBT_DEVICEARRIVAL = 0x8000;
Const int DBT_DEVICEREMOVECOMPLETE = 0x8004;
Protected override void WndProc (ref Message m)
{
Try
{
// If (m. Msg = WM_DEVICECHANGE)
//{
Switch (m. WParam. ToInt32 ())
{
Case DBT_DEVICEARRIVAL: // USB flash drive
DriveInfo [] s = DriveInfo. GetDrives ();
Foreach (DriveInfo drive in s)
{
If (drive. DriveType = DriveType. Removable)
{
Console. WriteLine ("USB insertion ");
Break;
}
}
Break;
Case DBT_DEVICEREMOVECOMPLETE: // unmount the USB flash drive
//
Console. WriteLine ("USB unmount ");
Break;
Default:
Break;
}
//}
}
Catch (Exception ex)
{
MessageBox. Show (ex. Message );
}
Base. WndProc (ref m );
}