sublayer List display

Question

How do i create a sublayer list like the sample here http://help.arcgis.com/en/webapi/silverlight/samples/start.htm#SubLayerList, but i don't want the layers to be displayed at first i want the option to turn layers on my self. How do i go about doing this?

Tonyalmeida · Answer

Thanks for the replay.

I only changed two lines and it works great!

dynamicServiceLayer.VisibleLayers = GetDefaultVisibleLayers(dynamicServiceLayer);

to

dynamicServiceLayer.VisibleLayers = new int[] { };

and

IsChecked="{Binding DefaultVisibility}"

to

IsEnabled="{Binding DefaultVisibility}"

JenniferNery · Answer

You can replace the ListBox ItemsSource="{Binding ElementName=MyMap, Path=Layers.[DynamicLayerCalifornia].Layers}" with an instance of ObservableCollection that gets populated when dynamic layer is initialized. Set the dynamic layer's VisibleLayers to an empty int[]. You also need to remove IsChecked="{Binding DefaultVisibility}" from the CheckBox. With these minor tweaks in the sample, you can control the sublayer visibility using the listbox. private ObservableCollection layers = new ObservableCollection(); public MainPage() { InitializeComponent(); this.LayerList.ItemsSource = layers; } private void ArcGISDynamicMapServiceLayer_Initialized(object sender, EventArgs e) { ESRI.ArcGIS.Client.ArcGISDynamicMapServiceLayer dynamicServiceLayer = sender as ESRI.ArcGIS.Client.ArcGISDynamicMapServiceLayer; foreach (LayerInfo l in dynamicServiceLayer.Layers) layers.Add(l); dynamicServiceLayer.VisibleLayers = new int[] { }; }