C# Windows Phone 8地图

C# Windows Phone 8地图,c#,windows-phone-7,windows-phone,bing-maps,C#,Windows Phone 7,Windows Phone,Bing Maps,我有下一个XAML: <maps:Map x:Name="MyMap" HorizontalAlignment="Left" Margin="10,10,0,0" VerticalAlignment="Top" Height="410" Width="436" CartographicMode="Hybrid"> <toolkit:MapExtensions.Children> <toolkit:Pushpi

我有下一个XAML:

<maps:Map x:Name="MyMap"  HorizontalAlignment="Left" Margin="10,10,0,0" VerticalAlignment="Top" Height="410" Width="436" CartographicMode="Hybrid">
            <toolkit:MapExtensions.Children>
                <toolkit:Pushpin Visibility="Collapsed" x:Name="pushpin" Content="My Position"/>
            </toolkit:MapExtensions.Children>
        </maps:Map>

我的图钉没有显示在地图上,我这里缺少什么?

我相信你忘了将图层添加到地图上:

MyMap.Layers.Add(layer0);

我相信你忘了在地图上添加图层:

MyMap.Layers.Add(layer0);
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