Windows Form application freeze randomly when run overnight

Question

I have a window form application, and it has multiple threads running that would invoke on the Main UI thread to update the UI. Occasionally on development machine, the app

Answer 1

I have been suffering this exact same problem and it was always due to the Microsoft.Win32.SystemEvents.DisplaySettingsChanged event that happens way more frequently under Windows 8.1 and also also when my application was running and someone connected with VNC or RDP. It was also very clear when using Windows x.x with Fusion (VMWare) over Mac that changes the desktop settings from time to time.

After trying lot of things I finally got it resolving by listening these events in my MainApp (the one that create all dialogs and also perform all Invoke)

Declare:

Microsoft.Win32.SystemEvents.DisplaySettingsChanged += SystemEvents_DisplaySettingsChanged;
Microsoft.Win32.SystemEvents.DisplaySettingsChanging += SystemEvents_DisplaySettingsChanging;
Microsoft.Win32.SystemEvents.UserPreferenceChanged += SystemEvents_UserPreferenceChanged;

Implement:

static void SystemEvents_UserPreferenceChanged(object sender, Microsoft.Win32.UserPreferenceChangedEventArgs e)
{
    //Do nothing
}

static void SystemEvents_DisplaySettingsChanged(object sender, EventArgs e)
{
    //Do nothing
}

static void SystemEvents_DisplaySettingsChanging(object sender, EventArgs e)
{
    //Do nothing
}

The capture of these events do nothing but this seems to be voiding the deadlock I was having when these events were coming from windows and any other part of my code was waiting for MainApp to attend an Invoke.

Hope this helps.