Capture UserControl RoutedEvent wrapped in Style

Hi, I've created a RecordNavigation UserControl (xaml and vb.net) and implemented bubbling RoutedEvents for each of the buttons.

    Public Shared GotoFirstEvent As RoutedEvent = EventManager.RegisterRoutedEvent("GotoFirst", RoutingStrategy.Bubble, GetType(RoutedEventHandler), GetType(adeptXRecordNavigationControl))
    Public Custom Event GotoFirst As RoutedEventHandler

        AddHandler(value As RoutedEventHandler)
            Me.AddHandler(GotoFirstEvent, value)
        End AddHandler

        RemoveHandler(value As RoutedEventHandler)
            Me.RemoveHandler(GotoFirstEvent, value)
        End RemoveHandler

        RaiseEvent(sender As Object, e As System.Windows.RoutedEventArgs)
            Me.RaiseEvent(e)
        End RaiseEvent
    End Event

    Private Sub RaiseGotoFirstEvent()
        Dim eventArgs As New RoutedEventArgs(adeptXRecordNavigationControl.GotoFirstEvent)
        MyBase.RaiseEvent(eventArgs)
    End Sub

    Private Sub btnGotoFirst_Click(ByVal sender As System.Object, ByVal e As System.Windows.RoutedEventArgs)
        Me.RaiseGotoFirstEvent()
    End Sub

I've created a ResourceDictionary (all xaml) to restyled DataGrid (called customDataGridStyle). I've placed the RecordNavigation UserControl inside the DataGrid (x:Name="RecordNavigation").

I can now restyle any DataGrid:

<ResourceDictionary.MergedDictionaries><ResourceDictionary Source="/MyProject;component/Resources/customDataGridResourceDictionary.xaml" /></ResourceDictionary.MergedDictionaries><DataGrid x:Name="dgClient" Style="{StaticResource customDataGridStyle}" ><DataGrid.Columns><DataGridTextColumn Header="Forename" Width="80" Binding="{Binding Path=Forename}" /><DataGridTextColumn Header="Surname" Width="80" Binding="{Binding Path=Surname}" /></DataGrid.Columns></DataGrid>

How can I capture events from the UserControl in the hosting Window?

Thanks, Graeme