Hi James,
Actually, we support adding multi-marker overlays on a single map. But the reason that you cannot find any sample and video for it is because that we don’t recommend doing this. Here is my early post for the explanation of the marker performance. Please focus on the reply on the 10th floor.
gis.thinkgeo.com/Support/Dis...fault.aspx
ValueMarkerStyle and ClassBreakMarkerStyle is a way to add different images or symbols on the overlay. Please see the following online sample which specifies ClassBreakMarkerStyle only, the ValueMarkerStyle is similar like it.
websamples.thinkgeo.com/webe...arker.aspx
On the other hand, you want to set different popup on different marker. I’m not sure how different. We support data formatting for popup. Just like the GridView, set some predefined columns and we’ll fix the value automatically for you. We have an online sample for you:
websamples.thinkgeo.com/webe...rkers.aspx
You can find that every marker displays its own name.
If it cannot satisfy you, we have another marker overlay “SimpleMarkerOverlay” which you create your own concrete marker and add into the overlay. So the markers are managed by you on the server side.
Hope it helps.
Thanks,
Howard