C# SystemEvents.PowerModeChanged fires too late

Question

I want to catch the PowerModeChanged event before the computer or notebook is suspended.

My code snippet is the following:

void SystemEvents_OnPowerChanged(object sender, PowerModeChangedEventArgs e)
    {
        string fileName = DateTime.Today.ToString("yyyy-MM-dd") + ".txt";   //Den aktuellen Tag ermittlen
        string time = DateTime.Now.ToString("HH:mm:ss");                    //Die Zeit beim Eintreten des Events ermitteln           

        switch (e.Mode)                                                     //Event abfangen
        {
            case PowerModes.Resume:                                         //Das Betriebssystem steht unmittelbar davor, aus dem Ruhezustand fortgesetzt zu werden, ...

                LogToFile(fileName, " - " + time + " -> Pause.");           //... sodass die Pause beendet ist.
                lblStatus.Text = "Arbeit, Arbeit! :)";
                break;

            case PowerModes.Suspend:                                        //Die Ausführung des Betriebssystems wird unterbrochen, ...

                LogToFile(fileName, "\n" + time);                           //... sodass die Pause beginnt, also wird ein Zeilenumbruch hinzugefügt.
                lblStatus.Text = "Luft filtern. :|";
                break;
        }
    }

If the standby is finished the event is fired two times. First e.Mode is equal to Suspend and at the second time e.Mode is equal Resume.

How can I pause the Standby-Mode and save the string to the file? Why is the event fired twice after the Standby, although it should fired once before and once after?

Unreel

did nobody have an idea since nearly two years? – Unreel

I don't know if you're still looking for answers, but I was able to find a few related questions. See here and here. – Anemia