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

Microsoft.Win32.SystemEvents.PowerModeChanged event will give you this information. This event is available in all variants of the .NET framework released by Microsoft so far.