Public Overrides Function GetTileUrl( _
   ByVal level As Integer, _
   ByVal row As Integer, _
   ByVal col As Integer _
) As String

public override string GetTileUrl( 
   int level,
   int row,
   int col
)

// This example assumes that a Map, ListBox, and Image controls have been previously added to the application in XAML.
// When the user clicks on an item in the Listbox, the Image control will be populated with the appropriate image
// tile that corresponds to the Url obtained by the ArcGISTiledMapServiceLayer.GetTileUrl Method.
            
public MainPage()
{
  InitializeComponent();
            
  // Add An ArcGISTiledMapServiceLayer to the Map Control 
  ESRI.ArcGIS.Client.ArcGISTiledMapServiceLayer myArcGISTiledMapServiceLayer = new ESRI.ArcGIS.Client.ArcGISTiledMapServiceLayer();
  myArcGISTiledMapServiceLayer.Url = "http://server.arcgisonline.com/ArcGIS/rest/services/ESRI_StreetMap_World_2D/MapServer";
  myArcGISTiledMapServiceLayer.ID = "myArcGISTiledMapServiceLayer";
  Map1.Layers.Add(myArcGISTiledMapServiceLayer);
            
  // Create the TileLoading Event handler for the ArcGISTiledMapServiceLayer
  myArcGISTiledMapServiceLayer.TileLoading +=new EventHandler<ESRI.ArcGIS.Client.TiledLayer.TileLoadEventArgs>(myArcGISTiledMapServiceLayer_TileLoading);
            
  // Create the SelectionChnaged Event handler for the Listbox1
  ListBox1.SelectionChanged += new System.Windows.Controls.SelectionChangedEventHandler(ListBox1_SelectionChanged);
            
}
            
private void myArcGISTiledMapServiceLayer_TileLoading(object sender, ESRI.ArcGIS.Client.TiledLayer.TileLoadEventArgs e)
{
            
  // This Event will fire for each tile that is loaded in the Map Control. For instance, if it takes 4 tiled images
  // to render the Map Control completely, then this Event will fire 4 times. As you Zoom In or Pan around to other
  // geographic areas in the Map, this Event will continue to fire until all of the tiles have been processed. 
            
  // The e argument of the Event returns a TileLoadEventArgs object.
  ESRI.ArcGIS.Client.TiledLayer.TileLoadEventArgs myTileLoadEventArgs = e;
            
  // Get the Tile's Level, Row, and Column Properties.
  int myLevel = myTileLoadEventArgs.Level;
  int myRow = myTileLoadEventArgs.Row;
  int myColumn = myTileLoadEventArgs.Column;
            
  // Generate a string that is comma delimitted with the Level, Row, and Column values and add them to a Listbox.
  string myString = myLevel.ToString() + "," + myRow.ToString() + "," + myColumn.ToString();
  ListBox1.Items.Add(myString);
            
}
            
private void ListBox1_SelectionChanged(object sender, System.Windows.Controls.SelectionChangedEventArgs e)
{
            
  // Get the SelectedItem from the Listbox and parse out the Level, Row, and Column arguments necessary to 
  // obtain the Url for a specific tile.
  string myString = (String)ListBox1.SelectedItem;
  string[] myParts = myString.Split(',');
  int mylevel = System.Convert.ToInt32(myParts[0]);
  int myrow = System.Convert.ToInt32(myParts[1]);
  int mycol = System.Convert.ToInt32(myParts[2]);
            
  // Get the Url for a specific tile.
  ESRI.ArcGIS.Client.ArcGISTiledMapServiceLayer myArcGISTiledMapServiceLayer = (ESRI.ArcGIS.Client.ArcGISTiledMapServiceLayer)Map1.Layers["myArcGISTiledMapServiceLayer"];
  string myUrl = myArcGISTiledMapServiceLayer.GetTileUrl(mylevel, myrow, mycol);
            
  // Set the specific tile's Url as the Image's Source. 
  Uri myUri = new Uri(myUrl);
  Image1.Source = new System.Windows.Media.Imaging.BitmapImage(myUri);
            
}

' This example assumes that a Map, ListBox, and Image controls have been previously added to the application in XAML.
' When the user clicks on an item in the Listbox, the Image control will be populated with the appropriate image
' tile that corresponds to the Url obtained by the ArcGISTiledMapServiceLayer.GetTileUrl Method.
            
Public Sub New()
  InitializeComponent()
  
  ' Add An ArcGISTiledMapServiceLayer to the Map Control 
   Dim myArcGISTiledMapServiceLayer As New ESRI.ArcGIS.Client.ArcGISTiledMapServiceLayer
   myArcGISTiledMapServiceLayer.Url = "http://server.arcgisonline.com/ArcGIS/rest/services/ESRI_StreetMap_World_2D/MapServer"
   myArcGISTiledMapServiceLayer.ID = "myArcGISTiledMapServiceLayer"
   Map1.Layers.Add(myArcGISTiledMapServiceLayer)
   
   ' Create the TileLoading Event handler for the ArcGISTiledMapServiceLayer
   AddHandler myArcGISTiledMapServiceLayer.TileLoading, AddressOf myArcGISTiledMapServiceLayer_TileLoading
   
End Sub
   
Private Sub myArcGISTiledMapServiceLayer_TileLoading(ByVal sender As Object, ByVal e As ESRI.ArcGIS.Client.TiledLayer.TileLoadEventArgs)
   
  ' This Event will fire for each tile that is loaded in the Map Control. For instance, if it takes 4 tiled images
  ' to render the Map Control completely, then this Event will fire 4 times. As you Zoom In or Pan around to other
  ' geographic areas in the Map, this Event will continue to fire until all of the tiles have been processed. 
   
  ' The e argument of the Event returns a TileLoadEventArgs object.
  Dim myTileLoadEventArgs As ESRI.ArcGIS.Client.TiledLayer.TileLoadEventArgs = e
   
  ' Get the Tile's Level, Row, and Column Properties.
  Dim myLevel As Integer = myTileLoadEventArgs.Level
  Dim myRow As Integer = myTileLoadEventArgs.Row
  Dim myColumn As Integer = myTileLoadEventArgs.Column
   
  ' Generate a string that is comma delimitted with the Level, Row, and Column values and add them to a Listbox.
  Dim myString As String = myLevel.ToString + "," + myRow.ToString + "," + myColumn.ToString
  ListBox1.Items.Add(myString)
   
End Sub
   
Private Sub ListBox1_SelectionChanged(ByVal sender As Object, ByVal e As System.Windows.Controls.SelectionChangedEventArgs) Handles ListBox1.SelectionChanged
   
  ' Get the SelectedItem from the Listbox and parse out the Level, Row, and Column arguments necessary to 
  ' obtain the Url for a specific tile.
  Dim myString As String = ListBox1.SelectedItem
  Dim myParts As String() = Split(myString, ",")
  Dim mylevel As Integer = CInt(myParts(0))
  Dim myrow As Integer = CInt(myParts(1))
  Dim mycol As Integer = CInt(myParts(2))
   
  ' Get the Url for a specific tile.
  Dim myArcGISTiledMapServiceLayer As ESRI.ArcGIS.Client.ArcGISTiledMapServiceLayer = Map1.Layers("myArcGISTiledMapServiceLayer")
  Dim myUrl As String = myArcGISTiledMapServiceLayer.GetTileUrl(mylevel, myrow, mycol)
   
  ' Set the specific tile's Url as the Image's Source. 
  Dim myUri As New Uri(myUrl)
  Image1.Source = New Imaging.BitmapImage(myUri)
   
End Sub