private void WaitForChange(object state, bool timedOut)
{
bool flag = false;
lock (this.NotificationLock)
{
this.RegisteredWait.Unregister(null);
this.RegisteredWait = null;
if (this.NotificationHandle.IsValid && this.NotificationHandle.Next())
{
this.RegisteredWait = ThreadPool.RegisterWaitForSingleObject(this.NotificationHandle, new WaitOrTimerCallback(this.WaitForChange), null, -1, true);
flag = true;
}
else
{
this.NotificationHandle.Close();
this.NotificationHandle = null;
}
}
if (flag)
{
this.OnChanged(EventArgs.Empty);
}
}
private void Restart()
{
lock (this.NotificationLock)
{
this.Stop();
this.NotificationHandle = new NotificationWaitHandle(this.FPath, this.FWatchSubdirs, this.FFilter);
if (!this.NotificationHandle.Start())
{
this.NotificationHandle = null;
}
else
{
this.RegisteredWait = ThreadPool.RegisterWaitForSingleObject(this.NotificationHandle, new WaitOrTimerCallback(this.WaitForChange), null, -1, true);
}
}
}
private void Stop()
{
lock (this.NotificationLock)
{
if (this.RegisteredWait != null)
{
this.RegisteredWait.Unregister(null);
}
this.RegisteredWait = null;
if (this.NotificationHandle != null)
{
this.NotificationHandle.Close();
}
this.NotificationHandle = null;
}
}
