topic Re: MapTip from multiple feature layers in ArcGIS API for Silverlight Questions

MapTip from multiple feature layers

MikeDuppong — Thu, 13 Sep 2012 21:34:29 GMT

Not sure if this is possible; figured I'd toss it out here in case someone had an idea for me.

I have two feature layers that are optional in the map; they may or may not be present. If they are present, I would like to be able to let the user hover the mouse over a feature in feature layer 1, then show certain attributes from that feature as well as related data from feature layer 2 in a MapTip.

Any ideas?

Thanks in advance,

Mike

Re: MapTip from multiple feature layers

DominiqueBroux — Fri, 14 Sep 2012 05:51:26 GMT

I have two feature layers that are optional in the map

Not sure how you create these feature layers but for sure a map can manage multiple feature layers with maptips.

If you create the feature layers by code on the fly, you can create the maptip at the same time by code.

Re: MapTip from multiple feature layers

MikeDuppong — Fri, 14 Sep 2012 13:05:58 GMT

I realize that multiple feature layers can be handled, each with MapTips; however I'm uncertain as to how to perform the procedure I have indicated.

I'm going to guess that I'll have to hook into a mouse event and when it slows to a certain point, find the nearest feature from layer 1, then fire off an async call to get the associated data from layer 2, then display it. ?

Re: MapTip from multiple feature layers

DominiqueBroux — Fri, 14 Sep 2012 13:15:15 GMT

I'm going to guess that I'll have to hook into a mouse event and when it slows to a certain point, find the nearest feature from layer 1, then fire off an async call to get the associated data from layer 2, then display it. ?

The easier way to get maptips is to set the Maptip property of the FeatureLayers.

There is a sample here : http://resources.arcgis.com/en/help/silverlight-api/samples/start.htm#GraphicsMapTip

(the maptip is set in XAML but the same thing can be made by code).

Re: MapTip from multiple feature layers

MikeDuppong — Fri, 14 Sep 2012 13:32:40 GMT

Thanks Dominique - I've seen that example, and unfortunately that's not what I'm after. I need to display data from more than one feature layer in a single MapTip.

Per original post: "show certain attributes from that feature as well as related data from feature layer 2 in a MapTip"