How can I know when Windows is going into/out of sleep or Hibernate mode?

Question

Is it possible to subscribe to a Windows event that fires when Windows is going into or coming out of Sleep or Hibernate state?

I need my application to be made awar

Answer 1

You can subscribe to NetworkChange.NetworkAvailabilityChanged and NetworkChange.NetworkAddressChanged.

I generally start a two second timer so that I can resume network communications after being in sleep mode when it times out.