Public Property ImageFormat As ArcGISImageServiceLayer.ImageServiceImageFormat

public ArcGISImageServiceLayer.ImageServiceImageFormat ImageFormat {get; set;}

<esri:Map Name="Map1" Height="400" Width="400" ">
  <!-- ImageFormat Property (Read/Write). -->
  <esri:ArcGISImageServiceLayer 
        Url="http://sampleserver3.arcgisonline.com/ArcGIS/rest/services/Portland/CascadeLandsat/ImageServer" 
        ImageFormat="PNG24"/>
</esri:Map>
<TextBlock Name="TextBlock_ImageFormat" Height="23" Width="248" 
           Text="{Binding ElementName=Map1, Path=Layers[0].ImageFormat}"/>

private void MainPage_Loaded(object sender, System.Windows.RoutedEventArgs e)
{
                
  // The Map1 object (a Map object) was defined previously in XAML.
                
  // Create an ArcGISImageServiceLayer.
  ESRI.ArcGIS.Client.ArcGISImageServiceLayer myArcGISImageServiceLayer = new ESRI.ArcGIS.Client.ArcGISImageServiceLayer();
  myArcGISImageServiceLayer.Url = "http://sampleserver3.arcgisonline.com/ArcGIS/rest/services/Portland/CascadeLandsat/ImageServer";
                
  // Set the ImageFormat to PNG24.
  myArcGISImageServiceLayer.ImageFormat = ESRI.ArcGIS.Client.ArcGISImageServiceLayer.ImageServiceImageFormat.PNG24;
                
  // Create an Event Handler.
  myArcGISImageServiceLayer.Initialized += new System.EventHandler<EventArgs>(ArcGISImageServiceLayer_Intialized);
                
  // Add the ArcGISImageServiceLayer to the LayerCollection of the Map.
  Map1.Layers.Add(myArcGISImageServiceLayer);
                
}
                
private void ArcGISImageServiceLayer_Intialized(object sender, EventArgs e)
{
                
  // The Map1 object (a Map object) and TextBlock_ImageFormat (a TextBlock object) were defined previously in XAML.
  
  // Access a specific ArcGISImageServiceLayer.
  ESRI.ArcGIS.Client.ArcGISImageServiceLayer myArcGISImageServiceLayer = (ESRI.ArcGIS.Client.ArcGISImageServiceLayer)Map1.Layers[0];
    
  // ImageFormat Property (Read Only).
  TextBlock_ImageFormat.Text = myArcGISImageServiceLayer.ImageFormat.ToString();
                
}

Private Sub MainPage_Loaded(ByVal sender As Object, ByVal e As System.Windows.RoutedEventArgs) Handles Me.Loaded
                
  ' The Map1 object (a Map object) was defined previously in XAML.
                
  ' Create an ArcGISImageServiceLayer.
  Dim myArcGISImageServiceLayer As New ESRI.ArcGIS.Client.ArcGISImageServiceLayer
  myArcGISImageServiceLayer.Url = "http://sampleserver3.arcgisonline.com/ArcGIS/rest/services/Portland/CascadeLandsat/ImageServer"
                
  ' Set the ImageFormat to PNG24.
  myArcGISImageServiceLayer.ImageFormat = ESRI.ArcGIS.Client.ArcGISImageServiceLayer.ImageServiceImageFormat.PNG24
                
  ' Create an Event Handler.
  AddHandler myArcGISImageServiceLayer.Initialized, AddressOf ArcGISImageServiceLayer_Intialized
                
  ' Add the ArcGISImageServiceLayer to the LayerCollection of the Map.
  Map1.Layers.Add(myArcGISImageServiceLayer)
                
End Sub
                
Private Sub ArcGISImageServiceLayer_Intialized(ByVal sender As Object, ByVal e As EventArgs)
  
  ' The Map1 object (a Map object) and TextBlock_ImageFormat (a TextBlock object) were defined previously in XAML.
                
  ' Access a specific ArcGISImageServiceLayer.
  Dim myArcGISImageServiceLayer As ESRI.ArcGIS.Client.ArcGISImageServiceLayer = Map1.Layers.Item(0)
  
  ' ImageFormat Property (Read Only).
  TextBlock_ImageFormat.Text = myArcGISImageServiceLayer.Description
                
End Sub