添加一下代码：

string suriFormat = "http://r2.tiles.ditu.live.com/tiles/r{quadkey}.png?g=41";            Microsoft.Maps.MapControl.WPF.TileSource tileSource = new Microsoft.Maps.MapControl.WPF.TileSource(suriFormat);            Microsoft.Maps.MapControl.WPF.MapTileLayer tileLayer = new Microsoft.Maps.MapControl.WPF.MapTileLayer(); //初始化一个图层            tileLayer.TileSource = tileSource;            tileLayer.Opacity = 0.9;            this.bingmap1.Children.Add(tileLayer);            this.bingmap1.Mode = new Microsoft.Maps.MapControl.WPF.MercatorMode();