C# Do I have to unsubscribe from WMI events before closing?

Asked Oct 17 '17 at 23:06

Active Oct 18 '17 at 19:47

Viewed 163 times

As the title says, In my code I have registered a callback function when a program launches using WMI:

ManagementEventWatcher Watcher = new ManagementEventWatcher(new WqlEventQuery("SELECT * FROM Win32_ProcessStartTrace WHERE ProcessName='ExampleApp.exe'"));

Before my application exits do I have to call:

Watcher.Stop(); 
Watcher.Dispose();

Or is it done automatically. The reason I ask is that my application that is subscribing to the event will be Process.Kill() by another application, rather than gracefully terminating so it doesn't not have the chance to properly unsubscribe.

Thanks

edited Oct 18 '17 at 19:47

asked Oct 17 '17 at 23:06

Zeller33

While that is done automatically by the GC (AFAIK), it won't be near as fast as if you did it yourself. You should not be closing your app with `Process.Kill()` though – Camilo Terevinto Oct 17 '17 at 23:11
Nothing goes wrong if you don't Stop or Dispose. The OS always cleans up correctly. It is its job. – Hans Passant Oct 18 '17 at 00:10
You should only ask one question per post. If you have a new question post a new question. – Scott Chamberlain Oct 18 '17 at 18:28

C# Do I have to unsubscribe from WMI events before closing?

0 Answers0