Question

How do I call a method from SessionSwitch event in windows application using c#? Any use of delegate is needed? Please help with a sample code.

Answer 1

Like this:

SystemEvents.SessionSwitch += HandleSessionSwitch;

...

private static void HandleSessionSwitch(object sender, Microsoft.Win32.SessionSwitchEventArgs e)
{
    // do something
}

Note: You should unsubscribe from this event when your application shuts down or memory leaks might result (as described in the documentation on MSDN).