topic Re: How can I label features rendered in a feature layer? in ArcGIS API for Silverlight Questions

How can I label features rendered in a feature layer?

JordanParmer — Thu, 09 Sep 2010 19:27:03 GMT

I'm using a FeatureLayer to render polygons on a Silverlight map. I need to label each polygon with an attribute from the underlying feature class. I know a DynamicMapServiceLayer supports labeling from the server, but I don't want to use a DynamicMapServiceLayer. I can't figure out how to label a FeatureLayer since the Silverlight client handles the drawing.

I tried modifying the symbology, but couldn't figure out how to get both a text symbol and fill symbol together. Next, I looked at manually specifying a ControlTemplate for the symbol. I could get the text to display, but not the fill on the polygon shape.

Ideas?

Re: How can I label features rendered in a feature layer?

Anonymous User — Fri, 10 Sep 2010 05:41:09 GMT

The best solution is to publish a service with your labels annotated as you like, then turn them on and off as needed. However, if your stuck you can check out this sample. It shows how to work with TextSymbols which you can assign to your graphics in the GraphicsCollection. From FeatureLayer you can get a GraphicsCollection. I have not tried this but it's something to attempt if you cannot add another layer containing annotations.

http://help.arcgis.com/en/webapi/silverlight/samples/start.htm#AddGraphics
http://help.arcgis.com/en/webapi/silverlight/apiref/ESRI.ArcGIS.Client~ESRI.ArcGIS.Client.FeatureLayer_members.html

Doug Carroll, ESRI Support Services SDK Team
http://support.esri.com/

Re: How can I label features rendered in a feature layer?

JordanParmer — Fri, 10 Sep 2010 13:33:57 GMT

Thanks! I'll experiment with both of those and see what works.

Re: How can I label features rendered in a feature layer?

MustafaOgurlu — Tue, 30 Oct 2012 12:24:09 GMT

That's not useful.

Labels must be shown on map with FeatureLayer. So that I can open or close the label form legend.

But there is not support for this.

Re: How can I label features rendered in a feature layer?

SanajyJadhav — Wed, 31 Oct 2012 03:45:01 GMT

One approach could be as below.

1. Use geometry service to get label points for the desired features.
2. Use text graphics at these points.This text would take on value based on some field.

HTH.