Public Function GetZIndex() As Integer

public int GetZIndex()

<Grid x:Name="LayoutRoot">
  
  <!-- Define some Resources that can be used in other parts of the XAML file. -->
  <Grid.Resources>
    
    <!-- Define a SimpleFillSymbol to use as the initial display of the Graphics on the Map. -->
    <esri:SimpleFillSymbol x:Key="HollowFillSymbol" BorderBrush="black" BorderThickness="2" />
      
    <!-- 
    Define a SpatialReference object that has the same WKID as the ArcGISTiledMapServiceLayer in
    the Map. This will allow for the Graphics in the GraphicsLayer to line up properly. 
     -->
    <esri:SpatialReference x:Key="theSpatialReference" WKID="4326"/>
      
  </Grid.Resources>
    
  <!-- 
  Add a Map control with an ArcGISTiledMapServiceLayer and a GraphicsLayer. The GraphicsLayer will
  contain several Graphics based upon Polygon geometries (which use the defined SpatialReference) 
  and using the HollowFillSymbol as the default symbolization. 
  -->
  <esri:Map Background="White" HorizontalAlignment="Left" Margin="12,111,0,0" Name="Map1" 
            VerticalAlignment="Top" Height="318" Width="483" >
    <esri:ArcGISTiledMapServiceLayer ID="PhysicalTiledLayer" 
             Url="http://services.arcgisonline.com/ArcGIS/rest/services/ESRI_StreetMap_World_2D/MapServer"/>
      
    <!-- 
    It is important to provide the GraphicsLayer with an 'ID' Attribute so to be able to access it
    in the code-behind file. 
    -->
    <esri:GraphicsLayer ID="MyGraphicsLayer" >
    
      <esri:GraphicsLayer.Graphics>
      
        <!-- 
        Define several Polygon based Graphics using the StaticResources for the Symbol and SpatialReference.
        -->
        <esri:Graphic Symbol="{StaticResource HollowFillSymbol}">
          <esri:Polygon SpatialReference="{StaticResource theSpatialReference}">
            <esri:Polygon.Rings>
              <esri:PointCollection>
                <esri:MapPoint X="-10" Y="10" />
                <esri:MapPoint X="-10" Y="45" />
                <esri:MapPoint X="25" Y="30" />
                <esri:MapPoint X="-10" Y="10" />
              </esri:PointCollection>
            </esri:Polygon.Rings>
          </esri:Polygon>
        </esri:Graphic>
        
        <esri:Graphic Symbol="{StaticResource HollowFillSymbol}">
          <esri:Polygon SpatialReference="{StaticResource theSpatialReference}">
            <esri:Polygon.Rings>
              <esri:PointCollection>
                <esri:MapPoint X="10" Y="10" />
                <esri:MapPoint X="10" Y="45" />
                <esri:MapPoint X="45" Y="30" />
                <esri:MapPoint X="10" Y="10" />
              </esri:PointCollection>
            </esri:Polygon.Rings>
          </esri:Polygon>
        </esri:Graphic>
        
        <esri:Graphic Symbol="{StaticResource HollowFillSymbol}">
          <esri:Polygon SpatialReference="{StaticResource theSpatialReference}">
            <esri:Polygon.Rings>
              <esri:PointCollection>
                <esri:MapPoint X="30" Y="10" />
                <esri:MapPoint X="30" Y="45" />
                <esri:MapPoint X="65" Y="30" />
                <esri:MapPoint X="30" Y="10" />
              </esri:PointCollection>
            </esri:Polygon.Rings>
          </esri:Polygon>
        </esri:Graphic>
        
        <esri:Graphic Symbol="{StaticResource HollowFillSymbol}">
          <esri:Polygon SpatialReference="{StaticResource theSpatialReference}">
            <esri:Polygon.Rings>
              <esri:PointCollection>
                <esri:MapPoint X="50" Y="10" />
                <esri:MapPoint X="50" Y="45" />
                <esri:MapPoint X="85" Y="30" />
                <esri:MapPoint X="50" Y="10" />
              </esri:PointCollection>
            </esri:Polygon.Rings>
          </esri:Polygon>
        </esri:Graphic>
        
      </esri:GraphicsLayer.Graphics>
    </esri:GraphicsLayer>
  </esri:Map>
  
  <!-- Provide the instructions on how to use the sample code. -->
  <TextBlock Height="64" HorizontalAlignment="Left" Name="TextBlock1" VerticalAlignment="Top" 
           Width="512" TextWrapping="Wrap" Margin="12,12,0,0" 
           Text="Click the two buttons to see how setting Z-Index values changes the 
                 Graphics visual appearance on the Map. Move the mouse cursor over 
                 some of the Graphics to display a MapTip showing Z-Index values." />
    
  <!-- 
  Add two Buttons to perform the work. Note: the Click Event handlers are wired-up to use 
  code-behind. 
  -->
  <Button Content="Set Z-Index left to right" Height="23" HorizontalAlignment="Left" Margin="12,82,0,0" 
          Name="Button1"  VerticalAlignment="Top" Width="235" Click="Button1_Click"/>
  <Button Content="Set Z-Index right to left" Height="23" HorizontalAlignment="Left" Margin="260,82,0,0" 
          Name="Button2" VerticalAlignment="Top" Width="235" Click="Button2_Click"/>
      
</Grid>

private void Button1_Click(object sender, System.Windows.RoutedEventArgs e)
{
  // This function set the Z Index value in the same order as the Graphics in the GraphicsLayer. A MapTip
  // for the Graphic is set up to display the Z index value. The symbology is modified from the intial
  // setting in XAML.
  
  // Get the GraphcsLayer from what was defined in XAML.
  ESRI.ArcGIS.Client.GraphicsLayer theGraphicsLayer = Map1.Layers["MyGraphicsLayer"];
  
  // Get the GraphicCollection from the GraphicsLayer.
  ESRI.ArcGIS.Client.GraphicCollection theGraphicCollection = theGraphicsLayer.Graphics;
  
  // Create a counter.
  int myindex = 0;
  
  // Loop through each Graphic in the GraphicCollection
  foreach (ESRI.ArcGIS.Client.Graphic aGraphic in theGraphicCollection)
  {
    // Set the Z Index value by the counter.
    aGraphic.SetZIndex(myindex);
    
    // Incriment the counter.
    myindex = myindex + 1;
    
    // Create a new instance of a SimpleFillSymbol and set its Color, BorderBrush, and BorderThickness 
    // Properties and apply it to the Graphic.
    ESRI.ArcGIS.Client.Symbols.SimpleFillSymbol aSimpleFillSymbol = new ESRI.ArcGIS.Client.Symbols.SimpleFillSymbol();
    aSimpleFillSymbol.Fill = new System.Windows.Media.SolidColorBrush(Colors.Green);
    aSimpleFillSymbol.BorderBrush = new System.Windows.Media.SolidColorBrush(Colors.Yellow);
    aSimpleFillSymbol.BorderThickness = 5;
    aGraphic.Symbol = aSimpleFillSymbol;
    
    // Set up a simple MapTip for the Graphic to display the Z Index value.
    TextBox aTextBox1 = new TextBox();
    aTextBox1.Text = "Z-Index:" + aGraphic.GetZIndex.ToString();
    aTextBox1.Background = new System.Windows.Media.SolidColorBrush(Colors.Yellow);
    aGraphic.MapTip = aTextBox1;
  }
}
            
private void Button2_Click(object sender, System.Windows.RoutedEventArgs e)
{
  // This function set the Z Index value in the reverse order as the Graphics in the GraphicsLayer. A MapTip
  // for the Graphic is set up to display the Z index value. The symbology is modified from the intial
  // setting in XAML.
  
  // Get the GraphcsLayer from what was defined in XAML.
  ESRI.ArcGIS.Client.GraphicsLayer theGraphicsLayer = Map1.Layers["MyGraphicsLayer"];
  
  // Get the GraphicCollection from the GraphicsLayer.
  ESRI.ArcGIS.Client.GraphicCollection theGraphicCollection = theGraphicsLayer.Graphics;
  
  // Create a counter. Set it to the count of all the Graphics in the GraphicsCollection - 1.
  int myindex = theGraphicCollection.Count - 1;
  
  // Loop through each Graphic in the GraphicCollection
  foreach (ESRI.ArcGIS.Client.Graphic aGraphic in theGraphicCollection)
  {
    // Set the Z Index value by the counter.
    aGraphic.SetZIndex(myindex);
    
    // Decriment the counter.
    myindex = myindex - 1;
    
    // Create a new instance of a SimpleFillSymbol and set its Color, BorderBrush, and BorderThickness 
    // Properties and apply it to the Graphic.
    ESRI.ArcGIS.Client.Symbols.SimpleFillSymbol aSimpleFillSymbol = new ESRI.ArcGIS.Client.Symbols.SimpleFillSymbol();
    aSimpleFillSymbol.Fill = new System.Windows.Media.SolidColorBrush(Colors.Red);
    aSimpleFillSymbol.BorderBrush = new System.Windows.Media.SolidColorBrush(Colors.Cyan);
    aSimpleFillSymbol.BorderThickness = 5;
    aGraphic.Symbol = aSimpleFillSymbol;
    
    // Set up a simple MapTip for the Graphic to display the Z Index value.
    TextBox aTextBox1 = new TextBox();
    aTextBox1.Text = "Z-Index:" + aGraphic.GetZIndex.ToString();
    aTextBox1.Background = new System.Windows.Media.SolidColorBrush(Colors.Cyan);
    aGraphic.MapTip = aTextBox1;
  }
}

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.Windows.RoutedEventArgs)
    
  ' This function set the Z Index value in the same order as the Graphics in the GraphicsLayer. A MapTip
  ' for the Graphic is set up to display the Z index value. The symbology is modified from the intial
  ' setting in XAML.
    
  ' Get the GraphcsLayer from what was defined in XAML.
  Dim theGraphicsLayer As ESRI.ArcGIS.Client.GraphicsLayer = Map1.Layers("MyGraphicsLayer")
  
  ' Get the GraphicCollection from the GraphicsLayer.
  Dim theGraphicCollection As ESRI.ArcGIS.Client.GraphicCollection = theGraphicsLayer.Graphics
  
  ' Create a counter.
  Dim myindex As Integer = 0
  
  ' Loop through each Graphic in the GraphicCollection
  For Each aGraphic As ESRI.ArcGIS.Client.Graphic In theGraphicCollection
    
    ' Set the Z Index value by the counter.
    aGraphic.SetZIndex(myindex)
    
    ' Incriment the counter.
    myindex = myindex + 1
    
    ' Create a new instance of a SimpleFillSymbol and set its Color, BorderBrush, and BorderThickness 
    ' Properties and apply it to the Graphic.
    Dim aSimpleFillSymbol As New ESRI.ArcGIS.Client.Symbols.SimpleFillSymbol
    aSimpleFillSymbol.Fill = New System.Windows.Media.SolidColorBrush(Colors.Green)
    aSimpleFillSymbol.BorderBrush = New System.Windows.Media.SolidColorBrush(Colors.Yellow)
    aSimpleFillSymbol.BorderThickness = 5
    aGraphic.Symbol = aSimpleFillSymbol
    
    ' Set up a simple MapTip for the Graphic to display the Z Index value.
    Dim aTextBox1 As New TextBox
    aTextBox1.Text = "Z-Index:" + aGraphic.GetZIndex.ToString
    aTextBox1.Background = New System.Windows.Media.SolidColorBrush(Colors.Yellow)
    aGraphic.MapTip = aTextBox1
    
  Next
  
End Sub
  
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.Windows.RoutedEventArgs)
  
  ' This function set the Z Index value in the reverse order as the Graphics in the GraphicsLayer. A MapTip
  ' for the Graphic is set up to display the Z index value. The symbology is modified from the intial
  ' setting in XAML.
  
  ' Get the GraphcsLayer from what was defined in XAML.
  Dim theGraphicsLayer As ESRI.ArcGIS.Client.GraphicsLayer = Map1.Layers("MyGraphicsLayer")
  
  ' Get the GraphicCollection from the GraphicsLayer.
  Dim theGraphicCollection As ESRI.ArcGIS.Client.GraphicCollection = theGraphicsLayer.Graphics
  
  ' Create a counter. Set it to the count of all the Graphics in the GraphicCollection - 1.
  Dim myindex As Integer = theGraphicCollection.Count - 1
    
  ' Loop through each Graphic in the GraphicCollection
  For Each aGraphic As ESRI.ArcGIS.Client.Graphic In theGraphicCollection
    
    ' Set the Z Index value by the counter.
    aGraphic.SetZIndex(myindex)
    
    ' Decriment the counter.
    myindex = myindex - 1
    
    ' Create a new instance of a SimpleFillSymbol and set its Color, BorderBrush, and BorderThickness 
    ' Properties and apply it to the Graphic.
    Dim aSimpleFillSymbol As New ESRI.ArcGIS.Client.Symbols.SimpleFillSymbol
    aSimpleFillSymbol.Fill = New System.Windows.Media.SolidColorBrush(Colors.Red)
    aSimpleFillSymbol.BorderBrush = New System.Windows.Media.SolidColorBrush(Colors.Cyan)
    aSimpleFillSymbol.BorderThickness = 5
    aGraphic.Symbol = aSimpleFillSymbol
    
    ' Set up a simple MapTip for the Graphic to display the Z Index value.
    Dim aTextBox1 As New TextBox
    aTextBox1.Text = "Z-Index:" + aGraphic.GetZIndex.ToString
    aTextBox1.Background = New System.Windows.Media.SolidColorBrush(Colors.Cyan)
    aGraphic.MapTip = aTextBox1
    
  Next
  
End Sub