Partial Public Class MainPage
    Inherits UserControl
    Private pd As PrintDocument()

    Public Sub New()
        InitializeComponent()
        pd = New PrintDocument()

    End Sub

    Private Sub PrintButton_Click(ByVal sender As Object, _
            ByVal e As RoutedEventArgs)
        pd.Print("M yMap")
    End Sub

    Private Sub pd_PrintPage(ByVal sender As Object, _
            ByVal e As PrintPageEventArgs) Handles pd.PrintPage
        e.PageVisual = mapImage
    End Sub
End Class

public partial class MainPage : UserControl
{
    PrintDocument pd; 

    public MainPage()
    {
        InitializeComponent();
        pd = new PrintDocument();
        pd.PrintPage += new EventHandler<PrintPageEventArgs>(pd_PrintPage);

    }

    private void PrintButton_Click(object sender, RoutedEventArgs e)
    {
      pd.Print("My Map");
    }

    void pd_PrintPage(object sender, PrintPageEventArgs e)
    {
        e.PageVisual = mapImage;
    }
}

<StackPanel x:Name="LayoutRoot">
      <Button Margin="5" Width="200" Content="Click to print" x:Name="PrintButton" 
              Click="PrintButton_Click" />
      <Image Width="600"  Height="600" Source="RedmondMap.jpg" x:Name="mapImage"/>
  </StackPanel>