Onclick event for a sublayer in a ArcGISDynamicMapServiceLayer

Question

Hi there,

I have an ArcGISDynamicMapServiceLayer which consists of maybe 40 or so sublayers and I would like to trigger an onclick event for a specific sublayer within an ArcGISDynamicMapServiceLayer.  For instance, if I select a polygon of the sublayer, I want to create a chart in a seperate div. This is pretty easy to do with FeatureLayers, ie:

var featureLayer = new esri.layers.FeatureLayer("https://blah blah blah", { options  });

featureLayer.on("click", function (evt) {

// Do something

});

However, I am not sure if this is possible with ArcGISDynamicMapServiceLayer.

The reason that I am hoping to add an event to a sublayer is that i need the sublayers to sit underneath the top layer in a table of contents view. The only other way that I can come up with is to put several featureLayers together and somehow group them in a group layer within the table of contents.  I am also not sure how to do this, but in theory this could be possible.

Any ideas?

thanks,

Nat

JakeSkinner · Accepted Answer

Hi N Evatt, You can use the IdentifyTask class to do this. Below is an example: Sample Map