Incorrect Coordinates - ArcGIS Silver Light Viewer

[RaviPatidar]

Hi,
We are facing problem while showing coordinates on ArcGIS Silver Light Viewer it is showing the incorrect  coordinates .Do any one know how to set the proper coordinate system in ArcGIS Silver Light Viewer or how to solve this problem.
Thanks in Advance
Kind regards
Ravi

[PietaSwanepoel2]

Ravi,

the default coordinate system for Silverlight Viewer is WGS84 Web Mercator Auxiliary Sphere (WKID: 102100)

in config/Map.xml you will find settings:

 
<esri:Map.Extent>
  <esri:Envelope XMin="957494" XMax="3718062.75" YMin="-3940055.57461395" YMax="-2794963.42538605">
   <esri:Envelope.SpatialReference>
    <esri:SpatialReference WKID="102100" />
   </esri:Envelope.SpatialReference>
  </esri:Envelope>
 </esri:Map.Extent>

You don't have to use this if you don't use any of the arcgis online basemaps. You could use your own tiled services as basemaps in silverlight viewer