在地图中添加自定义XAML
在Map程序集中有一个小控件叫MapPolygon。向它提供一系列位置，它就会在你的地图中画出一个自定义的多边形，当用户缩放和移动地图时它仍会固定在那个位置。由于它是基于经纬度而绑定到地图的，所以程序中有需要，可以很容易地用它勾勒出国家，州，地区，甚至一个停车场的轮廓。下面是实现方法：
XAML
<map:MapPolygon Fill="Purple" Stroke="White" Opacity=".7" Locations="40.1449,-82.9754 40.1449,-12.9754 10.1449,-82.9754" />
C#
MapPolygon mapPolygon = new MapPolygon();
mapPolygon.Fill = new SolidColorBrush(Colors.Purple);
mapPolygon.Stroke = new SolidColorBrush(Colors.White);
mapPolygon.Opacity = .7;
LocationCollection locations = new LocationCollection();
Location location = new Location();
location.Latitude = 40.1449;
location.Longitude = -82.9754;
Location location1 = new Location();
location1.Latitude = 40.1449;
location1.Longitude = -12.9754;
Location location2 = new Location();
location1.Latitude = 10.1449;
location1.Longitude = -82.9754;
locations.Add(location);
locations.Add(location1);
locations.Add(location2);
mapPolygon.Locations = locations;
MapControl.Children.Add(mapPolygon);
<map:MapPolygon Fill="Purple" Stroke="White" Opacity=".7" Locations="40.1449,-82.9754 40.1449,-12.9754 10.1449,-82.9754" />
C#
MapPolygon mapPolygon = new MapPolygon();
mapPolygon.Fill = new SolidColorBrush(Colors.Purple);
mapPolygon.Stroke = new SolidColorBrush(Colors.White);
mapPolygon.Opacity = .7;
LocationCollection locations = new LocationCollection();
Location location = new Location();
location.Latitude = 40.1449;
location.Longitude = -82.9754;
Location location1 = new Location();
location1.Latitude = 40.1449;
location1.Longitude = -12.9754;
Location location2 = new Location();
location1.Latitude = 10.1449;
location1.Longitude = -82.9754;
locations.Add(location);
locations.Add(location1);
locations.Add(location2);
mapPolygon.Locations = locations;
MapControl.Children.Add(mapPolygon);
就是这些。我们已经将一个图钉和一个自定义多边形覆盖到了地图中。关于这个控件的更多功能请参见Bing Maps Silverlight Control Interactive SDK(下面是MapPolygon的截图)
在这个例子中，你可以找到用XAML和C#将图钉和多边形添加到地图中的例子。可能你不需要全部内容，可以取其一，这完全由你决定。
