How to deal with a mixture of service layer types?

Question

I have a map with several types of service layers (ArcGISTiledMapServiceLayer, ArcGISDynamicMapServiceLayer, and FeatureServiceLayers). I can create a layer list (i.e. TOC) that displays all of the layers in these services, which is fine. However when I try to add in MapTips for these layers is where I run into trouble. If for example I have an element that has 3 layers, then I must define each layer in that service as an and build the MapTip for this element. When I do this, I get a red dot as an icon for the FeatureLayer placed on top of the normal icon, and I now get 4 entries to the layer list (TOC). Is there a way to define the MapTips for the ArcGISDynamicMapServiceLayer without having to add a FeatureLayer element for each layer? Thanks, Charlie

SomeGISGuy · Answer

I think you are missing a layer.Refresh() in there after setting the LayerIDs?

DominiqueBroux · Answer

At first glance, your code looks good. So likely the problem is with group layers.
Take care that if a group layer is visible all sublayers are automatically visible as well.
If you want to see only some sublayers of a group layer, remove the groupLayer ID from the visibleLayerList and add the IDs of the sublayers.

SanjayRajput · Answer

Morten, Iam using following sample link example to display my layers in the TOC to turnon and turnoff the layers (in ArcGISDynamicMapServiceLayer). http://help.arcgis.com/en/webapi/silverlight/samples/start.htm#SubLayerList I am able to see the layers list with the checkboxes but when I click on any of the layers checkboxes to turnon or turnoff the layers nothing happens. i.e. Layers are still there on the map. Below is my code snippet. My mxd file contains some group layers also. Is that the problem or anything else. I will appreciate your reply. Sanjay. CODE BEHIND FILE: private void CheckBox_Click(object sender, RoutedEventArgs e) { CheckBox tickedCheckBox = sender as CheckBox; string serviceName = tickedCheckBox.Name; bool visible = (bool)tickedCheckBox.IsChecked; int layerIndex = (int)tickedCheckBox.Tag; ESRI.ArcGIS.Client.ArcGISDynamicMapServiceLayer dynamicServiceLayer = MyMap.Layers[serviceName] as ESRI.ArcGIS.Client.ArcGISDynamicMapServiceLayer; List visibleLayerList = dynamicServiceLayer.VisibleLayers != null ? dynamicServiceLayer.VisibleLayers.ToList() : new List(); if (visible) { if (!visibleLayerList.Contains(layerIndex)) visibleLayerList.Add(layerIndex); } else { if (visibleLayerList.Contains(layerIndex)) visibleLayerList.Remove(layerIndex); } dynamicServiceLayer.VisibleLayers = visibleLayerList.ToArray(); } private void ArcGISDynamicMapServiceLayer_Initialized(object sender, EventArgs e) { ESRI.ArcGIS.Client.ArcGISDynamicMapServiceLayer dynamicServiceLayer = sender as ESRI.ArcGIS.Client.ArcGISDynamicMapServiceLayer; if (dynamicServiceLayer.VisibleLayers == null) dynamicServiceLayer.VisibleLayers = GetDefaultVisibleLayers(dynamicServiceLayer); } private int[] GetDefaultVisibleLayers(ESRI.ArcGIS.Client.ArcGISDynamicMapServiceLayer dynamicService) { List visibleLayerIDList = new List(); ESRI.ArcGIS.Client.LayerInfo[] layerInfoArray = dynamicService.Layers; for (int index = 0; index < layerInfoArray.Length; index++) { if (layerInfoArray[index].DefaultVisibility) visibleLayerIDList.Add(index); } return visibleLayerIDList.ToArray(); }