Public Property TokenGenerationReferer As String

public string TokenGenerationReferer {get; set;}

<Grid x:Name="LayoutRoot" Background="White">
  
  <!-- 
  Add a Map Control. Set its Extent to the North-West US with the Spatial Reference of WKID=102100. 
  FYI: By setting the Map's Extent and SpatialReference explicitly, the ArcGISTiledMapServiceLayer can be displayed instantly without 
  having to wait for the ArcGISDynamicMapServiceLayer to return its SpatialReference information. The SpatialReference information 
  about the ArcGISDynamicMapServiceLayer will not be known until the user supplies the correct username/password for the IdentityManager 
  to get the Token Secured layer.
  -->
  <esri:Map Name="MyMap" WrapAround="True" Height="300" Width="500" Margin="0,260,378,0">
    <esri:Map.Extent>
      <esri:Envelope XMin="-13914551" YMin="5620588" XMax="-12870236" YMax="6403824">
        <esri:Envelope.SpatialReference>
          <esri:SpatialReference WKID="102100" />
        </esri:Envelope.SpatialReference>
      </esri:Envelope>
    </esri:Map.Extent>
    
    <!-- Add an unsecured ArcGISTiledMapServiceLayer as a backdrop. -->
    <esri:ArcGISTiledMapServiceLayer ID="Street Map" 
     Url="http://services.arcgisonline.com/ArcGIS/rest/services/World_Street_Map/MapServer"/>
    
    <!-- 
    Add a Token Secured ArcGISDynamicMapServiceLayer that you provide. You may also need to adjust the Map.Extent (above) to match the 
    geographic area of your custom dataset. -->
    <esri:ArcGISDynamicMapServiceLayer ID="Bellevue_Tree_Survey" DisplayName="Bellevue Tree Survey"
     Url="http://www.YourArcGISServer.com/arcgis/rest/services/TokenSecuredServices/Bellevue_Tree_Survey/MapServer"/>
    
  </esri:Map>
  
  <!-- Add a MapProgressBar to show that data layers are loading. -->
  <esri:MapProgressBar x:Name="MyProgressBar" Map="{Binding ElementName=MyMap}"	HorizontalAlignment="Center" VerticalAlignment="Center"
   Width="297" Height="82"	Margin="171,210,310,268" />
  
  <!-- Add some controls that display what the Referer is that is being passed to the Http WebRequest Header. -->
  <Label Height="28" HorizontalAlignment="Left" Margin="0,147,0,0" Name="Label1" VerticalAlignment="Top" 
   Content="IdentityManager.TokenGenerationReferer:"/>
  <TextBlock Height="23" HorizontalAlignment="Left" Margin="4,172,0,0" Name="TextBlock_IdentityManager_TokenGenerationReferer" 
   Text="TextBlock" VerticalAlignment="Top" />
  <Label Height="28" HorizontalAlignment="Left" Margin="0,214,0,0" Name="Label2" VerticalAlignment="Top" 
   Content="IdentityManager.GenerateTokenOptions.Referer:"/>
  <TextBlock Height="23" HorizontalAlignment="Left" Margin="4,239,0,0" Name="TextBlock_IdentityManager_GenerateTokenOptions_Referer" 
   Text="TextBlock" VerticalAlignment="Top" />
  
  <!-- 
  Add a temporary Grid that disappears when the user has entered the correct username/password for the IdentityManager and the 
  ArcGISDynamicMapServiceLayer has loaded.
  -->
  <Grid Name="ShadowGrid" VerticalAlignment="Stretch" HorizontalAlignment="Stretch" Background="#66121212"/>
    
    <!--
    Add controls that will allow for the user to specify a username/password to access the ArcGISDynamicMapServiceLayer. The controls
    will disappear when the user has entered the correct username/password for the IdentityManager and the ArcGISDynamicMapServiceLayer 
    has loaded.
    -->
    <Grid Name="LoginGrid" MaxWidth="250" HorizontalAlignment="Right" VerticalAlignment="Top" Margin="0,15,15,0" Visibility="Collapsed">
      <Rectangle Stroke="Gray" RadiusX="10" RadiusY="10" Fill="LightGray" Margin="-10" >
        <Rectangle.Effect>
          <DropShadowEffect/>
        </Rectangle.Effect>
      </Rectangle>
      <Grid>
        <Grid.ColumnDefinitions>
          <ColumnDefinition Width="Auto"/>
          <ColumnDefinition />
        </Grid.ColumnDefinitions>
        <Grid.RowDefinitions>
          <RowDefinition />
          <RowDefinition />
          <RowDefinition />
          <RowDefinition />
        </Grid.RowDefinitions>
        
        <!-- Yes, the password is visible in this example. You could use a PasswordBox instead to mask the password text. -->
        <TextBlock Name="TitleTextBlock" Grid.Row="0" Grid.ColumnSpan="2" TextWrapping="Wrap" />
        <TextBlock Text="Username" Grid.Column="0" Grid.Row="1" Margin="2" VerticalAlignment="Center" />
        
        <!-- Supply your 'YourUserName' in the Text Property! -->
        <TextBox Name="UserTextBox" Text="YourUserName" HorizontalAlignment="Right" Margin="2" Grid.Column="1" 
         Grid.Row="1" Width="140" />
         
        <TextBlock Text="Password" Grid.Column="0" Grid.Row="2" Margin="2" VerticalAlignment="Center" />
        
        <!-- Supply your 'YourPassword' in the Text Property! -->
        <TextBox Name="PasswordTextBox" Text="YourPassword" HorizontalAlignment="Right" Margin="2" Grid.Column="1" 
         Grid.Row="2" Width="140" />
         
        <Button Name="LoginLoadLayerButton" Content="Login and Load Layer" Width="140" Margin="0,5,0,5" 
         HorizontalAlignment="Center" Grid.Row="3" Grid.ColumnSpan="2" />
        
    </Grid>
  </Grid>
  
  <!-- Add a LegendControl. -->
  <Border Name="LegendBorder" HorizontalAlignment="Right" VerticalAlignment="Top" Margin="5" Visibility="Collapsed">
    <esri:Legend Map="{Binding ElementName=MyMap}" LayerItemsMode="Tree" Height="300" Margin="406,260,12,0"/>
  </Border>
  
  <!-- Provide the instructions on how to use the sample code. -->
  <TextBlock Height="129" HorizontalAlignment="Left" Name="TextBlock1" VerticalAlignment="Top" Width="486" TextWrapping="Wrap" Margin="4,12,0,0" 
   Text="When the application loads a backdrop ArcGISTiledMapServiceLayer is displayed. An 
   ArcGISDynamicMapServiceLayer that has Token security is added via XAML and on its first 
   attempt to load it will fail. Then the user is prompted to enter username/password 
   information to generate a Token via the IdentityManager to access the secured layer. A 
   'Referer' is set as part of the long term Token generation process that will be passed 
   back and forth in the Http WebRequest Headers. NOTE: it is required to supply your own 
   Url to a Token Secured ArcGIS Server MapService Layer. You also need to know your 
   username/passoword to access the Layer." />
   
</Grid>

public MainWindow()
{
  InitializeComponent();
  
  // Wire up an Event Handler for when all of the Layer have been initialized in the Map.
  MyMap.Layers.LayersInitialized += Layers_Initialized;
  
  // Add a referer string to the IdentityManager. This referer string is then part of the Http WebRequest Header.
  // FYI: You can view the 'Referer' header information in freeware/shareware applications like 'Fiddler'.
  ESRI.ArcGIS.Client.IdentityManager.Current.TokenGenerationReferer = "MY CUSTOM REFERER STRING (ex: http://www.MyServer.com, arcgis.com, BillyBob, etc.)";
  
  // Call the IdentityManager.Challange Method to access the Token based ArcGISDynamicMapServiceLayer.
  ESRI.ArcGIS.Client.IdentityManager.Current.ChallengeMethod = Challenge;
}
            
// Member variable to hold attempts at getting Url for the Token services.
private Dictionary<string, int> _MyChallengeAttemptsPerUrl = new Dictionary<string, int>();
            
private void Challenge(string url, Action<ESRI.ArcGIS.Client.IdentityManager.Credential, Exception> callback, ESRI.ArcGIS.Client.IdentityManager.GenerateTokenOptions options)
{
  // Enable the user to be able to provide username/password information in the controls defined in XAML.
  LoginGrid.Visibility = System.Windows.Visibility.Visible;
  
  // Add display information to the custom login controls. 
  TitleTextBlock.Text = string.Format("Login to access:" + Environment.NewLine + " {0}", url);
  
  // Add the Url to the member variable.
  if (! (_MyChallengeAttemptsPerUrl.ContainsKey(url)))
  {
    _MyChallengeAttemptsPerUrl.Add(url, 0);
  }
  
  // Use the IdentityManager to generate a Token for accessing the ArcGISDynamicMapServiceLayer. It will try 3 times to get a Token 
  // before giving up. Once the Token is obtained remove the Event Handler for being able to supply username/password login information. 
  RoutedEventHandler handleClick = null;
  handleClick = (s, e) => {
     ESRI.ArcGIS.Client.IdentityManager.Current.GenerateCredentialAsync(url, UserTextBox.Text, PasswordTextBox.Text, (credential, ex) => 
     {
       _MyChallengeAttemptsPerUrl[url] += 1;
       if (ex == null || _MyChallengeAttemptsPerUrl[url] == 3)
       {
         LoginLoadLayerButton.Click -= handleClick;
         callback(credential, ex);
       }
     }, options);
    };
  
  // Wire up the Event Handler for when the user enters a username/password to generate a Token.
  LoginLoadLayerButton.Click += handleClick;
  
  // Code logic to handle when the user is entering username/password information in the XAML controls.
  System.Windows.Input.KeyEventHandler handleEnterKeyDown = null;
  handleEnterKeyDown = (s, e) => {
      if (e.Key == System.Windows.Input.Key.Enter)
      {
        PasswordTextBox.KeyDown -= handleEnterKeyDown;
        handleClick(null, null);
      }
    };
  
  // Wire up the Event Handler for the user typing information in the username/password controls. 
  PasswordTextBox.KeyDown += handleEnterKeyDown;
}
            
private void Layers_Initialized(object sender, System.EventArgs e)
{
  // This function fires when all of the Layers have been added to the Map Control.
  
  // Get the LayerCollection from the sender.
  ESRI.ArcGIS.Client.LayerCollection MyLayerCollection = (ESRI.ArcGIS.Client.LayerCollection)sender;
  
  // Loop through each Layer.
  foreach (ESRI.ArcGIS.Client.Layer MyLayer in MyLayerCollection)
  {
    // We are only interested in processing the Token Secured ArcGISDynamicMapServiceLayer.
    if (MyLayer.ID == "Bellevue_Tree_Survey")
    {
      if (MyLayer.InitializationFailure == null)
      {
        // We successfully accessed the Token Secured ArcGISDynamicMapServiceLayer.
        
        // Make the controls for supplying the username/password as well as the Grid that is covering all of the other controls 
        // in the application dissapear from the screen.
        LoginGrid.Visibility = System.Windows.Visibility.Collapsed;
        ShadowGrid.Visibility = System.Windows.Visibility.Collapsed;
        
        // Now that the ArcGISDynamicMapServiceLayer is available show the Legend Control. 
        LegendBorder.Visibility = System.Windows.Visibility.Visible;
        
        // Two options to see what the IdentityManager is passing to the Http WebRequest Header for the Referer. In both options the 
        // Referer that is being passed is the same information.
        
        // Option1: Using IdentityManager.TokenGenerationReferer
        string WhatIsTheReferer = ESRI.ArcGIS.Client.IdentityManager.Current.TokenGenerationReferer;
        TextBlock_IdentityManager_TokenGenerationReferer.Text = WhatIsTheReferer;
        
        // Option2: Using IdentityManager.GenerateTokenOptions.Referer
        IEnumerable<ESRI.ArcGIS.Client.IdentityManager.Credential> MyIEnumerableOfCredential = ESRI.ArcGIS.Client.IdentityManager.Current.Credentials;
        if (MyIEnumerableOfCredential.Count() > 0)
        {
          ESRI.ArcGIS.Client.IdentityManager.Credential MyCredentials = MyIEnumerableOfCredential.First();
          ESRI.ArcGIS.Client.IdentityManager.GenerateTokenOptions MyIdentityManager_GenerateTokenOptions = MyCredentials.GenerateTokenOptions;
          string WhatIsTheReferer2 = MyIdentityManager_GenerateTokenOptions.Referer;
          TextBlock_IdentityManager_GenerateTokenOptions_Referer.Text = WhatIsTheReferer2;
        }
      }
      else
      {
        // There was a problem accessing the Token Secured ArcGISDynamicMapServiceLayer.
        MessageBox.Show(MyLayer.InitializationFailure.Message);
      }
    }
  }
}

Public Sub New()
  
  InitializeComponent()
  
  ' Wire up an Event Handler for when all of the Layer have been initialized in the Map.
  AddHandler MyMap.Layers.LayersInitialized, AddressOf Layers_Initialized
  
  ' Add a referer string to the IdentityManager. This referer string is then part of the Http WebRequest Header.
  ' FYI: You can view the 'Referer' header information in freeware/shareware applications like 'Fiddler'.
  ESRI.ArcGIS.Client.IdentityManager.Current.TokenGenerationReferer = "MY CUSTOM REFERER STRING (ex: http://www.MyServer.com, arcgis.com, BillyBob, etc.)"
  
  ' Call the IdentityManager.Challange Method to access the Token based ArcGISDynamicMapServiceLayer.
  ESRI.ArcGIS.Client.IdentityManager.Current.ChallengeMethod = AddressOf Challenge
  
End Sub
            
' Member variable to hold attempts at getting Url for the Token services.
Private _MyChallengeAttemptsPerUrl As Dictionary(Of String, Integer) = New Dictionary(Of String, Integer)()
            
Private Sub Challenge(ByVal url As String, ByVal callback As Action(Of ESRI.ArcGIS.Client.IdentityManager.Credential, Exception), ByVal options As ESRI.ArcGIS.Client.IdentityManager.GenerateTokenOptions)
  
  ' Enable the user to be able to provide username/password information in the controls defined in XAML.
  LoginGrid.Visibility = System.Windows.Visibility.Visible
  
  ' Add display information to the custom login controls. 
  TitleTextBlock.Text = String.Format("Login to access:" + Environment.NewLine + " {0}", url)
  
  ' Add the Url to the member variable.
  If (Not _MyChallengeAttemptsPerUrl.ContainsKey(url)) Then
    _MyChallengeAttemptsPerUrl.Add(url, 0)
  End If
  
  ' Use the IdentityManager to generate a Token for accessing the ArcGISDynamicMapServiceLayer. It will try 3 times to get a Token 
  ' before giving up. Once the Token is obtained remove the Event Handler for being able to supply username/password login information. 
  Dim handleClick As RoutedEventHandler = Nothing
  handleClick = Sub(s, e)
                 ESRI.ArcGIS.Client.IdentityManager.Current.GenerateCredentialAsync(url, UserTextBox.Text, PasswordTextBox.Text,
                                                                 Sub(credential, ex)
                                                                   _MyChallengeAttemptsPerUrl(url) += 1
                                                                   If ex Is Nothing OrElse _MyChallengeAttemptsPerUrl(url) = 3 Then
                                                                      RemoveHandler LoginLoadLayerButton.Click, handleClick
                                                                      callback(credential, ex)
                                                                   End If
                                                                 End Sub _
                                                                 , options)
                End Sub
  
  ' Wire up the Event Handler for when the user enters a username/password to generate a Token.
  AddHandler LoginLoadLayerButton.Click, handleClick
  
  ' Code logic to handle when the user is entering username/password information in the XAML controls.
  Dim handleEnterKeyDown As System.Windows.Input.KeyEventHandler = Nothing
  handleEnterKeyDown = Sub(s, e)
                         If e.Key = System.Windows.Input.Key.Enter Then
                           RemoveHandler PasswordTextBox.KeyDown, handleEnterKeyDown
                           handleClick(Nothing, Nothing)
                         End If
                        End Sub
  
  ' Wire up the Event Handler for the user typing information in the username/password controls. 
  AddHandler PasswordTextBox.KeyDown, handleEnterKeyDown
  
End Sub
            
Private Sub Layers_Initialized(sender As System.Object, e As System.EventArgs)
  
  ' This function fires when all of the Layers have been added to the Map Control.
  
  ' Get the LayerCollection from the sender.
  Dim MyLayerCollection As ESRI.ArcGIS.Client.LayerCollection = sender
  
  ' Loop through each Layer.
  For Each MyLayer As ESRI.ArcGIS.Client.Layer In MyLayerCollection
    
    ' We are only interested in processing the Token Secured ArcGISDynamicMapServiceLayer.
    If MyLayer.ID = "Bellevue_Tree_Survey" Then
      
      If MyLayer.InitializationFailure Is Nothing Then
        
        ' We successfully accessed the Token Secured ArcGISDynamicMapServiceLayer.
        
        ' Make the controls for supplying the username/password as well as the Grid that is covering all of the other controls 
        ' in the application dissapear from the screen.
        LoginGrid.Visibility = System.Windows.Visibility.Collapsed
        ShadowGrid.Visibility = System.Windows.Visibility.Collapsed
        
        ' Now that the ArcGISDynamicMapServiceLayer is available show the Legend Control. 
        LegendBorder.Visibility = System.Windows.Visibility.Visible
        
        ' Two options to see what the IdentityManager is passing to the Http WebRequest Header for the Referer. In both options the 
        ' Referer that is being passed is the same information.
        
        ' Option1: Using IdentityManager.TokenGenerationReferer
        Dim WhatIsTheReferer As String = ESRI.ArcGIS.Client.IdentityManager.Current.TokenGenerationReferer
        TextBlock_IdentityManager_TokenGenerationReferer.Text = WhatIsTheReferer
        
        ' Option2: Using IdentityManager.GenerateTokenOptions.Referer
        Dim MyIEnumerableOfCredential As IEnumerable(Of ESRI.ArcGIS.Client.IdentityManager.Credential) = ESRI.ArcGIS.Client.IdentityManager.Current.Credentials
        If MyIEnumerableOfCredential.Count > 0 Then
          Dim MyCredentials As ESRI.ArcGIS.Client.IdentityManager.Credential = MyIEnumerableOfCredential(0)
          Dim MyIdentityManager_GenerateTokenOptions As ESRI.ArcGIS.Client.IdentityManager.GenerateTokenOptions = MyCredentials.GenerateTokenOptions
          Dim WhatIsTheReferer2 As String = MyIdentityManager_GenerateTokenOptions.Referer
          TextBlock_IdentityManager_GenerateTokenOptions_Referer.Text = WhatIsTheReferer2
          
        End If
        
      Else
        
        ' There was a problem accessing the Token Secured ArcGISDynamicMapServiceLayer.
        MessageBox.Show(MyLayer.InitializationFailure.Message)
        
      End If
      
    End If
    
  Next
  
End Sub