How to display a polygon in Silverlight and ESRI maps from xml file

JohnHarvey

I am a relative newby to Silverlight. I have done maps using Google's api to display polygons which are contained in an xml file, but I am lost as to how to make this happen here. Can someone show me how to add https://kiosk.memphispolice.org/mpdwards.xml into a map? This is a list of MPD precincts.

Thanks,

John Harvey

MartenLiebster

I am a relative newby to Silverlight. I have done maps using Google's api to display polygons which are contained in an xml file, but I am lost as to how to make this happen here. Can someone show me how to add https://kiosk.memphispolice.org/mpdwards.xml into a map? This is a list of MPD precincts.

Thanks,

John Harvey

Are you planing to get the file every client request?  If so, you would need to use the WebClient or HTTPRequest functionality built into SL to get the xml file from their sever.

Afterwards, you should be able to simply parse out the points into PointCollection(s), LinqToXML can be used to make this an easier task.

Then just add the Polygons with the collections to a GraphicsLayer.

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Or if the dataset is rather static, then you could save the data to your database. When you want to show the map, then retrieve the points from the DB and build polygons from that. Or you could use IsolatedStorage to save a cache copy of the XML file data.