Thank you for answer! I did so: 1) Read SQL Data (geography type) use query ""SELECT SpatialLocation.Lat,SpatialLocation.Long FROM [AdventureWorks2012].[Person].[Address]" 2)Read With ADO NET 3)Create "SimpleMarkerSymbol" using the converted Latitude and Longitude. static public void ToWebMercator(ref double mercatorX_lon, ref double mercatorY_lat) { if ((Math.Abs(mercatorX_lon) > 180 || Math.Abs(mercatorY_lat) > 90)) return; double num = mercatorX_lon * 0.017453292519943295; double x = 6378137.0 * num; double a = mercatorY_lat * 0.017453292519943295; mercatorX_lon = x; mercatorY_lat = 3189068.5 * Math.Log((1.0 + Math.Sin(a)) / (1.0 - Math.Sin(a))); } I would be glad if you write more than a simple way to do it!
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