我有Bing Maps Silverlight应用程序,并希望在地图上显示交通信息。 它似乎是在AJAX版本中实现的,但不是在Silverlight版本中实现的。
那么如何为Silverlight实现工作流量层?
答案 0 :(得分:2)
对于对解决方案感兴趣的每个人:
经过几个小时的搜索和尝试,我在这里找到了解决方案: Custom Rendering in Bing Silverlight Control
public class TrafficTileSource : TileSource
{
public TrafficTileSource()
: base(GetAbsoluteUrl("http://t0.tiles.virtualearth.net/tiles/t{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));
}
public static string GetAbsoluteUrl(string strRelativePath)
{
if (string.IsNullOrEmpty(strRelativePath))
return strRelativePath;
string strFullUrl;
if (strRelativePath.StartsWith("http:", StringComparison.OrdinalIgnoreCase)
|| strRelativePath.StartsWith("https:", StringComparison.OrdinalIgnoreCase)
|| strRelativePath.StartsWith("file:", StringComparison.OrdinalIgnoreCase)
)
{
//already absolute
strFullUrl = strRelativePath;
}
else
{
//relative, need to convert to absolute
strFullUrl = System.Windows.Application.Current.Host.Source.AbsoluteUri;
if (strFullUrl.IndexOf("/ClientBin") > 0)
strFullUrl = strFullUrl.Substring(0, strFullUrl.IndexOf("/ClientBin")) + strRelativePath;
}
return strFullUrl;
}
}
然后将图层添加到地图:
<m:MapTileLayer Visibility="{Binding Path=TrafficVisibility,Converter={StaticResource BoolToVisibilityConverter},Mode=OneWay,UpdateSourceTrigger=PropertyChanged}">
<m:MapTileLayer.TileSources>
<utils:TrafficTileSource />
</m:MapTileLayer.TileSources>
</m:MapTileLayer>
我希望能帮助每个想要为其Silverlight应用程序添加流量层的人。
问候。
答案 1 :(得分:2)
只是为了清理一下:这与约翰内斯的回答绝对相同:
public class TrafficTileSource : TileSource
{
public TrafficTileSource() : base("http://t0.tiles.virtualearth.net/tiles/t{0}.png") { }
public override Uri GetUri(int x, int y, int zoomLevel)
{
QuadKey quadKey = new QuadKey(x, y, zoomLevel);
return new Uri(String.Format(UriFormat, quadKey.Key));
}
}
地图图层:
<maps:MapTileLayer>
<maps:MapTileLayer.TileSources>
<utils:TrafficTileSource />
</maps:MapTileLayer.TileSources>
</maps:MapTileLayer>