YahooMaps or OpenStreetMaps in Silverlight?

Question

Has anyone seen an example of using the YahooMaps API in silverlight (2.0)? Specifically the JSON API? Yahoo publishes tutorial for Flash but not SL. I am trying to understand how to process the JSON reply from the server, which looks something like this:

var YAHOO=window.YAHOO||{}; YAHOO.namespace=function(_1){ if(!_1||!_1.length){ return null; } var _2=_1.split("."); var _3=YAHOO; for(var i=(_2[0]=="YAHOO")?1:0;i<_2.length;++i){ _3[_2[i]]=_3[_2[i]]||{}; _3=_3[_2[i]]; } return _3; }; YAHOO.namespace("util"); YAHOO.namespace("widget"); YAHOO.namespace("example");

var YMAPPID = "mykey...."; function _ywjs(inc) { var o='<'+'script src="'+inc+'"'+' type="text/javascript"><'+'/script>'; document.write(o); }_ywjs('zttp://l.yimg.com/d/lib/common/utils/2/dom_2.0.1-b2.js'); _ywjs('zttp://l.yimg.com/d/lib/common/utils/2/event_2.0.0-b2.js'); _ywjs('zttp://l.yimg.com/d/lib/common/utils/2/dragdrop_2.0.1-b4.js'); _ywjs('zttp://l.yimg.com/d/lib/common/utils/2/animation_2.0.1-b2.js'); _ywjs('zttp://l.yimg.com/d/lib/map/js/api/ymapapi_3_8_2_3.js');<!-- xm3.maps.re3.yahoo.com uncompressed/chunked Thu Jul 16 16:18:46 PDT 2009 -->

(replace zttp with http in the above code, this web page things I'm spamming)

Failing that, what about OpenStreetMaps?

Answer 1

OpenStreetMaps works just fine in the new Silverlight Map control.

Answer 2

BaseUri= "http://us.maps2.yimg.com/us.png.maps.yimg.com/png?v=3.52&amp;t=m&amp;x={0}&amp;y={1}&amp;z={2}";

public override Uri GetUri(int x, int y, int zoomLevel) { double posY; double zoom; checked { zoom = 18 - zoomLevel; } double num4 = Math.Pow(2.0, zoomLevel)/2.0;

        if (y < num4)
            posY = (num4 - Convert.ToDouble(y)) - 1.0;
        else
            posY = ((Convert.ToDouble(y) + 1) - num4)*-1.0;
        return new Uri(String.Format(CultureInfo.InvariantCulture, UriFormat, x, posY, zoom));
    }

Answer 3

If you're using Silverlight, a Microsoft technology, why not use the Bing / Virtual Earth mapping SDK. I think it would be a lot easier to use if you're doing anything but the most trivial display of a map. I haven't used it recently, but did a little toying around with it when it was still a CTP. Seemed really easy to add custom controls and styles to the map (say you wanted to mark locations with a push pin).

Here's a recent article I found that should give you a quickstart on it.

http://www.bing.com/community/blogs/maps/archive/2009/11/09/bing-maps-silverlight-control-1-0-released.aspx