pkar.UWP.Triggers 1.2.0

This Nuget contains wrappers for UWP Triggers.

Function IsTriggersRegistered() As Boolean
Function IsTriggersRegistered(nameFragment As String) As Boolean
Async Function CanRegisterTriggersAsync() As Task(Of Boolean)

Sub UnregisterTriggers()
Sub UnregisterTriggers(nameFragment As String)

Function RegisterTimerTrigger(name As String, freshnessMinutes As Integer, Optional oneShot As Boolean = False, Optional condition As Background.SystemCondition = Nothing) As BackgroundTaskRegistration
Function RegisterUserPresentTrigger(Optional Name As String = "", Optional oneShot As Boolean = False) As BackgroundTaskRegistration
Function RegisterServicingCompletedTrigger(Optional Name As String = "") As BackgroundTaskRegistration
Function RegisterToastTrigger(Optional Name As String = ") As BackgroundTaskRegistration

Function RegisterMidnightTrigger() As BackgroundTaskRegistration
Function IsThisMidnightTrigger(args As BackgroundActivatedEventArgs) As Boolean

Function DumpTriggers() As String
Function GetLastMidnightTriggerDate() As Date

Since 1.2.0, package contains one UserControl: AppBarClockTriggerToggleButton, that is AppBarToggleButton with:

    AppBarClockTriggerToggleButton.Icon=SymbolIcon(Symbol.Clock)
    AppBarClockTriggerToggleButton.Label="Autorun"
    AppBarClockTriggerToggleButton.RunEveryMin=30
    AppBarClockTriggerToggleButton.RunEveryHr=0.5
    AppBarClockTriggerToggleButton.RunPolnoc=false ' be warned! you should call IsThisMidnightTrigger from timer code
    AppBarClockTriggerToggleButton.TriggerName= Package.Current.DisplayName & "_Timer"
    AppBarClockTriggerToggleButton.DefaultState=false
    AppBarClockTriggerToggleButton.AutoUnregister=false' If TRUE, unchecking AppBarToggleButton would cause unregistering timer
    Event AppBarClockTriggerToggleButton.OnClick(sender As Object, RoutedEventArgs As Object)
    

Simply add this AppBarClockTriggerToggleButton to your XAML page. Its state (.IsChecked) would reflect IsTriggerRegistered - checking would register trigger, and unregistering can unregister (see AutoUnregister). Check/uncheck can also raise event OnClick (AFTER registering/unregistering)