C# how do I can detect some computer on LAN for shutdown

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Hi I need to have some application in C# that can detect shutdown of any system on LAN. If two computers are connected through LAN, how is it possible in C# for one computer to identify that the other system has been shutdown. OR how can one computer notify other that it is shutting down
Thanks

What I have tried:

Well I had tried TCP IP but there is no requirement in this regard.

Posted 6-Aug-18 23:19pm

Wahaj Khan

Updated 6-Aug-18 23:29pm

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Nelek · Answer 1 · 2018-08-06T23:30:00

I don't know if there is a more sophisticated way to do it...

but a possibility could be to use a regular ping
If the LAN partner is there, there is an answer if not a timeout.

You won't be able to know if the computer was switched down or the LAN cable was unplugged, but it is a start.

If it is really needed to know when shutdown is, then you can created an tiny application or service that run in the background:
1) The app/service listens the TCP input
2) the app/service sends a broadcast TCP Telegram or a concrete telegram to the given partner when exiting if windows is shutdown

But you won't have a signal if the shutdown is a hard one (e.g. black out)