A sample: custom title source of Silverlight Bing map

In Silverlight web page: <m:Map>    <m:Map.Mode>        <mCore:MercatorMode/>    </m:Map.Mode>    <m:Map.Children>        <m:MapTileLayer>                <m:MapTileLayer.TileSources>                        <local:CustomTileSource/>                </m:MapTileLayer.TileSources>        </m:MapTileLayer>    </m:Map.Children></m:Map> In the code-behind .cs file: public class CustomTileSource : TileSource{        public CustomTileSource()                : base(GetAbsoluteUrl("/ClientBin/Resources/{0}.png"))        {        }         public override Uri GetUri(int x, int y, int zoomLevel)        {                var quadKey = new QuadKey(x, y, zoomLevel);                return new Uri(String.Format(this.UriFormat, quadKey.Key));        }         […]