Windows Phone 8.1 WinRT 在 MapControl 上设置按钮位置

Windows Phone 8.1 WinRT set Button location on MapControl

我想在我的 WP 8.1 应用程序中设置 MapControl 上的按钮。问题是 Button 不在元素的位置上,仅在 Map 的左上角并且它正在移动。绑定中的位置是 Geopoint。这是我的代码:

<Maps:MapControl x:Name="MapEvent" Grid.Row="1">

        <Maps:MapItemsControl ItemsSource="{Binding}">
            <Maps:MapItemsControl.ItemTemplate>
                <DataTemplate>
                    <StackPanel>
                        <Button Maps:MapControl.Location="{Binding Location}" 
                                Maps:MapControl.NormalizedAnchorPoint="0.5,0.5" 
    Content="{Binding Name}"/>
                    </StackPanel>
                </DataTemplate>
            </Maps:MapItemsControl.ItemTemplate>
        </Maps:MapItemsControl>

    </Maps:MapControl>

这里是一些对我有用的代码的摘录:

public class PhotoInfo
{
    public String Label { get; set; }
    public String FileName { get; set; }
    public Geocoordinate Coordinate { get; set; }
    public Point NormalizedAnchorPoint { get { return new Point(0.5, 1); } }
}

我只是提醒大家不要绑定在Windows.Devices.Geolocation.Geocoordinate上,而是绑定在Windows.Devices.Geolocation.Geopoint上。

这就是 m:MapControl.Location 绑定 Coordinate.Point

的原因
<m:MapControl ZoomLevel="{Binding ZoomLevel}" Center="{Binding Center}"  MapServiceToken="xxx">
    <m:MapItemsControl ItemsSource="{Binding PhotoInfos}">
        <m:MapItemsControl.ItemTemplate>
            <DataTemplate>
                <Image m:MapControl.Location="{Binding Coordinate.Point}" 
                                       Source="ms-appx:///Assets/pushpin.png" 
                               m:MapControl.NormalizedAnchorPoint="{Binding NormalizedAnchorPoint}" Width="20" Height="45" Tapped="Image_Tapped"/> 
            </DataTemplate>
        </m:MapItemsControl.ItemTemplate>
    </m:MapItemsControl>
</m:MapControl>