Syntax
| Visual Basic (Declaration) | |
|---|---|
Public ReadOnly Property ObjectIdField As String | |
| C# | |
|---|---|
public string ObjectIdField {get;} | |
Remarks
If an ArcGISImageServiceLayer is not a Mosaic dataset there will not be any ArcGISImageServiceLayer.Fields to be obtained and hence only a zero length string is returned for the ObjectID Property. The ObjectID Property always returns a string value and not a Nothing/null. Only ArcGISImageServiceLayer's that are based on Mosaic datasets will return a non-zero length string for the ObjectID Property.
Example
| C# |  Copy Code |
|---|---|
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"; // 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_ObjectIdField (a TextBlock object) were defined previously in XAML. // Access a specific ArcGISImageServiceLayer. ESRI.ArcGIS.Client.ArcGISImageServiceLayer myArcGISImageServiceLayer = (ESRI.ArcGIS.Client.ArcGISImageServiceLayer)Map1.Layers[0]; // ObjectIdField Property (Read Only). TextBlock_ObjectIdField.Text = myArcGISImageServiceLayer.ObjectIdField; } | |
| VB.NET | Copy Code |
|---|---|
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" ' 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_ObjectIdField (a TextBlock object) were defined previously in XAML. ' Access a specific ArcGISImageServiceLayer. Dim myArcGISImageServiceLayer As ESRI.ArcGIS.Client.ArcGISImageServiceLayer = Map1.Layers.Item(0) ' ObjectIdField Property (Read Only). TextBlock_ObjectIdField.Text = myArcGISImageServiceLayer.ObjectIdField End Sub | |
Requirements
Target Platforms: Windows XP Professional, Windows Server 2003 family, Windows Vista, Windows Server 2008 family, Windows 7