How do you send in the LayoutRoot into a RelayCommand via a EventToCommand?
- by user298145
Grid example with the trigger:
<Grid x:Name="LayoutRoot" DataContext="{Binding ProjectGrid, Source={StaticResource Locator}}">
<i:Interaction.Triggers>
<i:EventTrigger EventName="Loaded">
<GalaSoft_MvvmLight_Command:EventToCommand Command="{Binding LoadedCommand, Mode=OneWay}" PassEventArgsToCommand="True"/>
</i:EventTrigger>
</i:Interaction.Triggers>
In my ViewModel I set the LoadedCommand like this:
public RelayCommand<RoutedEventArgs> LoadedCommand {get;private set;}
And in the ViewModel initializer I have this:
public ProjectGridViewModel()
{
LoadedCommand = new RelayCommand<RoutedEventArgs>(e =>
{
this.DoLoaded(e);
}
);
}
Then, in my DoLoaded I'm trying to do this:
Grid _projectGrid = null;
public void DoLoaded(RoutedEventArgs e)
{
_projectGrid = e.OriginalSource as Grid;
}
You can see I'm trying to get rid of my Loaded="" in my Grid in my view, and do a RelayCommand instead. The issue is the OriginalSource brings back nothing. My loaded event is running nice this way, but I need to get the Grid in via the RoutedEventArgs it seems.
I tried passing in the Grid in the EventCommand with CommandParameter="{Binding ElementName=LayoutRoot}", but this just crashes VS2010 when hitting F5 and running the project.
Any ideas? Or a better way to do this? I had the Loaded event run in the views C# then call the ViewModel in the Views code-behind, but I'd like to do a nicer binding. Talking to the ViewMode in the Views code-behind feels like a hack.
