How to add a legend for raster (GRID) layers in ESRI JS app

Question

I have a grid in an MXD that I am publishing using ArcGIS Server 9.3.1.

In the TOC I have made a legend with labels against each of my 5 classifications. I was expecting this to appear in my JS web app - but they never render. Does anyone know how to make a raster legend to work with the ESRI JS API.

The code I am using is direct from the example pages - and it shows a legend for the basemap so I know the code is working to a certain extent:

//add the legend
        dojo.connect(map,'onLayersAddResult',function(results){
          var layerInfo = dojo.map(results, function(layer,index){
            return {layer:layer.layer,title:layer.layer.name};
          });
          if(layerInfo.length > 0){
            var legendDijit = new esri.dijit.Legend({
              map:map,
              layerInfos:layerInfo
            },"legendDiv");
            legendDijit.startup();
          }
        });

UPDATE - Begining to think that this is only available at v10.x.....

Answer 1

Yes - I can confirm you need ArcGIS Server 10 for this to work.