Public Property Layers As LayerCollection

public LayerCollection Layers {get; set;}

<Grid x:Name="LayoutRoot">
  
  <!-- 
  Use the Resources section to hold a Style for setting the appearance and behavior of the Attribution 
  Control. 
  -->
  <Grid.Resources>
    
    <!--
    The majority of the XAML that defines the ControlTemplate for the Attribution Control was obtained
    by using Microsoft Blend. See the blog post entitled: 'Use control templates to customize the 
    look and feel of ArcGIS controls' at the following Url for general How-To background:
    http://blogs.esri.com/Dev/blogs/silverlightwpf/archive/2010/05/20/Use-control-templates-to-customize-the-look-and-feel-of-ArcGIS-controls.aspx
    -->
    <Style x:Key="AttributionStyle1" TargetType="esri:Attribution">
      <Setter Property="Background" Value="Transparent"/>
      <Setter Property="BorderBrush" Value="Transparent"/>
      <Setter Property="BorderThickness" Value="0"/>
      <Setter Property="IsTabStop" Value="False"/>
      <Setter Property="IsHitTestVisible" Value="False"/>
      <Setter Property="Template">
        <Setter.Value>
          <ControlTemplate TargetType="esri:Attribution">
            <Border BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" 
                    Background="{TemplateBinding Background}" CornerRadius="5">
              <ItemsControl ItemsSource="{Binding Items, RelativeSource={RelativeSource TemplatedParent}}">
                <ItemsControl.ItemTemplate>
                  <DataTemplate>
                    <Grid Margin="3">
                      <StackPanel Orientation="Horizontal">
                      
                        <!--
                        Add a TextBlock to display the Layer ID value in bold along with a dash (-) for a separator.
                        The StringFormat is used format the Layer ID value. There are several MSDN documents that are
                        a good reference for creating your own custom formatting using the BindingBase.StringFormat Property:
                        http://msdn.microsoft.com/en-us/library/system.windows.data.bindingbase.stringformat(v=VS.100).aspx
                        http://msdn.microsoft.com/en-us/library/26etazsy.aspx
                        http://msdn.microsoft.com/en-us/library/txafckwd.aspx
                        http://msdn.microsoft.com/en-us/library/dwhawy9k.aspx
                        http://msdn.microsoft.com/en-us/library/0c899ak8.aspx
                        http://msdn.microsoft.com/en-us/library/az4se3k1.aspx
                        http://msdn.microsoft.com/en-us/library/8kb3ddd4.aspx
                          
                        It is imperative that a Layer ID value be specified in XAML for the different Layers that are
                        added to the Map Control. If no ID value is specified, nothing will be displayed for the Layer
                        ID in the Attribution Control.
                        -->
                        <TextBlock Text="{Binding ID, StringFormat='\{0\} - '}" FontWeight="Bold" 
                                   FontFamily="Arial Black" FontSize="14"/>
                        
                        <ContentPresenter ContentTemplate="{Binding AttributionTemplate}" Content="{Binding}" />
                      </StackPanel>
                    </Grid>
                  </DataTemplate>
                </ItemsControl.ItemTemplate>
              </ItemsControl>
            </Border>
          </ControlTemplate>
        </Setter.Value>
      </Setter>
    </Style>
  </Grid.Resources>
  
  <!-- Provide the instructions on how to use the sample code. -->
  <TextBlock Height="67" HorizontalAlignment="Left" Name="TextBlock1" VerticalAlignment="Top" Width="626" 
             TextWrapping="Wrap" Margin="2,2,0,0" 
             Text="By default two Layers have been added to the Map Control and the CopyrightText information for those 
             Layers are displayed in the Attribution Control. Click the 'Apply a different ControlTemplate Style to 
             the Attribution Control' button to change the appearance of the text in the Attribution Control; it will 
             have the Layer ID in bold, a dash, and then the CopyrightText information displayed." />
      
  <!-- Add a Map Control and zoom to an initial Extent. -->
  <esri:Map Background="White" HorizontalAlignment="Left" Margin="12,113,0,0" Name="Map1" 
            VerticalAlignment="Top" Height="295" Width="600" 
            Extent="-15022410,2064855,-6201900,7017288" >
    
    <!-- 
    Add an ArcGISTiledMapServiceLayer. Note that and ID value is specified in XAML. The Layer's ID value is not 
    provided by the ArcGIS Server REST map service. 
    -->
    <esri:ArcGISTiledMapServiceLayer ID="US Topography" 
          Url="http://server.arcgisonline.com/ArcGIS/rest/services/USA_Topo_Maps/MapServer"/>
      
    <!-- 
    Add an ArcGISDynamicMapServiceLayer. Note that and ID value is specified in XAML. The Layer's ID value is not 
    provided by the ArcGIS Server REST map service. 
    -->
    <esri:ArcGISDynamicMapServiceLayer ID="US Population Change 1990 to 2000" Opacity=".3"
          Url="http://server.arcgisonline.com/ArcGIS/rest/services/Demographics/USA_1990-2000_Population_Change/MapServer" />
    
  </esri:Map>
  
  <!--
  Add an Attribution Control and Bind the Map.Layers to the Attribution.Layers. It is when the user clicks the 
  Button_ApplyStyle that a code-behind function will be used to apply the Style defined in the Grid.Resources
  to change the appearance of the text in the Attribution Control.
  -->
  <esri:Attribution HorizontalAlignment="Left" Margin="12,420,0,0" Name="Attribution1" Width="600" Height="48"
                    VerticalAlignment="Top" Layers="{Binding ElementName=Map1,Path=Layers}" />
    
  <!-- 
  If you prefer to have the new Style to change the appearance of the Attribution Control as soon as the
  application starts rather than have the user do it manually via a button click, uncomment the next line of XAML
  code. Make sure to comment out the above other Attribution Control to avoid having duplicates.
  -->
  <!--  <esri:Attribution HorizontalAlignment="Left" Margin="12,420,0,0" Name="Attribution1" Width="600" Height="48" 
                    VerticalAlignment="Top" Layers="{Binding ElementName=Map1,Path=Layers}" 
                    Style="{StaticResource AttributionStyle1}"/> -->
  
  <!-- 
  Add a button to dynamically change the text in the Attribution Control at run-time. Note the Click event 
  handler is wired up to use code-behind. 
  -->
  <Button Content="Apply a different ControlTemplate Style to the Attribution Control" 
          Height="25" HorizontalAlignment="Left" Margin="12,82,0,0" 
          Name="Button_ApplyStyle" VerticalAlignment="Top" Width="600" Click="Button_ApplyStyle_Click" />
      
</Grid>

private void Button_ApplyStyle_Click(object sender, System.Windows.RoutedEventArgs e)
{
  // Obtain the Style for the Resources section of the XAML file.
  System.Windows.Style myStyle = (System.Windows.Style)(LayoutRoot.Resources["AttributionStyle1"]);
  
  // Apply the custom Style to the Attribution Control.
  Attribution1.Style = myStyle;
}

Private Sub Button_ApplyStyle_Click(ByVal sender As System.Object, ByVal e As System.Windows.RoutedEventArgs)
  
  ' Obtain the Style for the Resources section of the XAML file.
  Dim myStyle As System.Windows.Style = CType(LayoutRoot.Resources("AttributionStyle1"), System.Windows.Style)
  
  ' Apply the custom Style to the Attribution Control.
  Attribution1.Style = myStyle
  
End Sub