WPF

//*** page where RoutedEvent is set up and fired from
namespace BlahBlah
{

    public partial class pageCfgBrushes : Page
    {
        // Register routed event - Bubble up
        public static readonly RoutedEvent BrushSelectionChangedEvent =
            EventManager.RegisterRoutedEvent("BrushSelectionChanged", RoutingStrategy.Bubble,
            typeof(RoutedEventHandler), typeof(pageCfgBrushes));

        public event RoutedEventHandler BrushSelectionChanged
        {
            add { AddHandler(BrushSelectionChangedEvent, value); }
            remove { RemoveHandler(BrushSelectionChangedEvent, value); }
        }

        public pageCfgBrushes()
        {
            InitializeComponent();
	}

        //*** The SelectDataset is fired from a comboListbox change event on the page, and it does run this code
        private void SelectDataset(object sender, SelectionChangedEventArgs e)
        {

            // Raise the routed event "BrushSelectionChangedEvent"
            RaiseEvent(new RoutedEventArgs(BrushSelectionChangedEvent));
           
        }
    }
}




//*** MainWindow
namespace BlahBlah
{
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();  //Initializes XAML code
        }

        protected override void OnInitialized(EventArgs e)
        {
            base.OnInitialized(e);


            //Don't show the navigation bar on screen
            navContent.NavigationUIVisibility = NavigationUIVisibility.Hidden;
            //...

            //Display main page on load
            navContent.Navigate(new pageMain());

            //testing RoutedEvent
            pnlStatusArea.AddHandler(pageCfgBrushes.BrushSelectionChangedEvent, new RoutedEventHandler(UpdateStatusBar));

        }

        //*** But this UpdateStatusBar routine never gets run
        private void UpdateStatusBar(object sender, RoutedEventArgs e)
        {
            this.StatusBlockMsg.Text = "DataChanged Event";
        }
    }
}

namespace WpfDataTemplate
{
    public class Rung : UIElement
    {
        public int RungNumber { get; set; }
    }
}

<Window x:Class="WpfDataTemplate.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
        xmlns:local="clr-namespace:WpfDataTemplate" 
        Title="MainWindow" Height="350" Width="525">
    <StackPanel>
        <StackPanel.Resources>
            <DataTemplate DataType="{x:Type local:Rung}">
                <Grid VerticalAlignment="Top" MinHeight="60" MinWidth="175">
                    <Grid.ColumnDefinitions>
                        <ColumnDefinition Width="75"/>
                        <ColumnDefinition MinWidth="175"/>
                    </Grid.ColumnDefinitions>
                    <TextBlock Grid.Column="0" x:Name="number" Text="{Binding RungNumber}"
                               HorizontalAlignment="Center" VerticalAlignment="Center"/>
                    <Path x:Name="LeftRail" Data="M0,0 L0,60" Stretch="Fill" Stroke="Blue" Width="1" HorizontalAlignment="Left" Grid.Column="1"/>
                    <Path x:Name="RightRail" Data="M0,0 L0,60" Stretch="Fill" Stroke="Blue" Width="1" HorizontalAlignment="Right" Grid.Column="1" Margin="0,0,10,0" />
                    <Path x:Name="Run" Data="M0,0 L10,0" Height="1" Stretch="Fill" Stroke="Blue" Grid.Column="1" VerticalAlignment="Top" Margin="0,30,10,0"/>
                </Grid>
            </DataTemplate>
            <local:Rung x:Key="newRung" />
        </StackPanel.Resources>

            <StackPanel Height="50" Orientation="Horizontal">
                <Button Height="24" Content="Add Rung"/>
            </StackPanel>
            <ContentControl Content="{StaticResource newRung}"/>

    </StackPanel>
</Window>

private void Button_Click(object sender, RoutedEventArgs e)
       {
           Rung r = new Rung {RungNumber = 1};
           RungSurface.Children.Add(r);
       }