Get Sleep/Hibernate and Resume/Wakeup events in Visual Basic.NET

Question

I have VB.NET app that communicates with some external server (maintains login sessions via Intranet), and I want to listen for Sleep/Hibernate events such that when it happens,

Answer 1

If your application is using a window and can read the message loop you can simply subscribe to Microsoft.Win32.SystemEvents.PowerModeChanged like:

AddHandler Microsoft.Win32.SystemEvents.PowerModeChanged, AddressOf SystemEvents_PowerModeChanged

Private Sub SystemEvents_PowerModeChanged(ByVal sender As Object, ByVal e As PowerModeChangedEventArgs)

    Select Case e.Mode
        Case PowerModes.Resume
        Case PowerModes.StatusChange
        Case PowerModes.Suspend
    End Select

End Sub

Else, if you are using a service for example, you have to create a hidden form like described here (scroll down to 'Example 2')