TriggerAction on Page events?

TriggerAction on Page events?

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Ranjini posted on Tuesday, August 17, 2010

Hi -

 I am trying to get an event to fire via ViewModel when navigating away from a page and I did the following...

<navigation:Page xmlns= xmlns:this="clr-namespace:DataOnline.RAM.DOLWebApp"  xmlns:csla ="clr-namespace:Csla.Xaml;assembly=Csla.Xaml" xmlns:controlsToolkit="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls.Toolkit" xmlns:navigation ="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls.Navigation" x:Class="DataOnline.RAM.DOLWebApp.Views.Systems" x:Name="SystemPage" >


        <this:StatusViewModel x:Key="mySystemViewModel"/>



<Grid x:Name="LayoutRoot" DataContext="{Binding Source={StaticResource mySystemViewModel }}">

<csla:TriggerAction x:Name="StopTimerTrigger" MethodName="KillTimer" TriggerEvent="NavigatedFrom" TargetControl="{Binding ElementName =SystemPage}"/>




public void KillTimer(object sender, Csla.Xaml.ExecuteEventArgs e)





The event “KillTimer” doesn’t get fired and I am wondering why.. Any ideas??




RockfordLhotka replied on Saturday, August 21, 2010

I've never tried attaching a TriggerAction to the actual form/window/page. Maybe it just doesn't work to do that.

You might try stepping through the code in TriggerAction that sets and finds the source to see if it is able to find the source and set up the event handler - it is quite possible that this doesn't work for some reason.

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