Bing 地图 polygon/polyline 出现在图像叠加层下方

Question

我一直在关注 post 关于为 bing 地图使用图像叠加层的内容：

http://blogs.msdn.com/b/bingdevcenter/archive/2014/04/04/image-overlays-with-bing-maps-native.aspx

我现在想要的是能够在此图像之上添加 polygons/polylines。例如，我们使用以下代码：

(From here: http://blogs.bing.com/maps/2014/01/23/make-clickable-shapes-in-the-native-bing-maps-control/)


private void MyMapLoaded(object sender, RoutedEventArgs e)
{
//Add a shape layer to the map
    shapeLayer = new MapShapeLayer();
    MyMap.ShapeLayers.Add(shapeLayer);

//Create mock data points
    var locs = new LocationCollection();

    locs.Add(new Location(coordinates that are over the image));
    locs.Add(new Location(coordinates that are over the image));
    locs.Add(new Location(coordinates that are over the image));

//Create test polygon
    var polygon = new MapPolygon();
    polygon.Locations = locs;
    polygon.FillColor = Colors.Red;


    shapeLayer.Shapes.Add(polygon);

    var locs2 = new LocationCollection();
    locs2.Add(new Location(20, 20));
    locs2.Add(new Location(40, 40));
    locs2.Add(new Location(50, 20));

//Create test polyline
    var polyline = new MapPolyline();
    polyline.Locations = locs2;
    polyline.Width = 5;
    polyline.Color = Colors.Blue;



//Add the shape to the map
    shapeLayer.Shapes.Add(polyline);
}

问题是 polygon/polyline 总是出现在图像下方。 ShapeLayer 有一个属性用于 z-index 但它没有帮助。有没有办法让我的多边形始终在顶部？

Answer 1

不确定为什么要这样做，但是您将无法在作为地图子项添加的用户控件上方显示 MapPolygon。也就是说，您可以创建 WPF 多边形并添加它们。您可以做的是创建一个自定义用户控件，将图像叠加功能与以下内容结合起来：http://blogs.msdn.com/b/bingdevcenter/archive/2014/03/25/custom-shapes-in-windows-store-apps-c.aspx

Bing 地图 polygon/polyline 出现在图像叠加层下方

Bing maps polygon/polyline appears beneath image overlay

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