设置Windows Phone 8上的图钉Bing地图（XAML C＃）

Question

我正在尝试做一个简单的示例应用程序，以便稍后为Windows Phone 8创建。我想在MainPage.xaml上创建一个Bing地图，集中在点（37.227700，-80422037），并且已经在地图上填充了图钉（不是用户添加的图钉，只是基于我目前硬编码的某些动态数据预先填充的特定位置的标记）。当我运行我的代码时，它会进入页面并加载地图，但不显示任何引脚。此外，尽管我在xaml中设置了ZoomLevel属性，但地图并未放大。我不熟悉这种编码范例，所以一定有一些我错过了。下面是我在xaml和c＃文件中的内容：

MainPage.xaml.cs（仅显示构造函数，但为简单起见，我没有其他方法）（可以看到注释掉了我尝试过的多个区域方法，没有一个是有工作）

public MainPage() 
    { 
     InitializeComponent(); 
     Map myMap = new Map(); 
     MapLayer layer0 = new MapLayer(); 

     Pushpin pushpin0 = new Pushpin(); 
     //Pushpin pushpin0 = (Pushpin)this.FindName("pushpin0"); 
     //Pushpin pushpin0 = MapExtensions.GetChildren(myMap).OfType<Pushpin>().First(p => p.Name == "pushpin0"); 
     //if (pushpin0 == null) { pushpin0 = new Pushpin(); } 
     pushpin0.GeoCoordinate = new GeoCoordinate(37.228510, -80.422860); 
     MapOverlay overlay0 = new MapOverlay(); 
     overlay0.Content = pushpin0; 
     overlay0.GeoCoordinate = new GeoCoordinate(37.228510, -80.422860); 
     layer0.Add(overlay0); 

     Pushpin pushpin1 = new Pushpin(); 
     pushpin1.GeoCoordinate = new GeoCoordinate(37.226399, -80.425271); 
     MapOverlay overlay1 = new MapOverlay(); 
     overlay1.Content = pushpin1; 
     layer0.Add(overlay1); 
     Pushpin pushpin2 = new Pushpin(); 
     pushpin2.GeoCoordinate = new GeoCoordinate(37.228900, -80.427450); 
     MapOverlay overlay2 = new MapOverlay(); 
     overlay2.Content = pushpin2; 
     layer0.Add(overlay2); 

     ContentPanel.Children.Add(myMap); 
    } 

MainPage.xaml中

<phone:PhoneApplicationPage 
x:Class="SimpleApp.MainPage" 
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
xmlns:phone="clr-namespace:Microsoft.Phone.Controls;assembly=Microsoft.Phone" 
xmlns:shell="clr-namespace:Microsoft.Phone.Shell;assembly=Microsoft.Phone" 
xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
mc:Ignorable="d" 
FontFamily="{StaticResource PhoneFontFamilyNormal}" 
FontSize="{StaticResource PhoneFontSizeNormal}" 
Foreground="{StaticResource PhoneForegroundBrush}" 
SupportedOrientations="Portrait" Orientation="Portrait" 
shell:SystemTray.IsVisible="True" 
xmlns:Controls="clr-namespace:Microsoft.Phone.Maps.Controls;assembly=Microsoft.Phone.Maps" 
xmlns:toolkit="clr-namespace:Microsoft.Phone.Maps.Toolkit;assembly=Microsoft.Phone.Controls.Toolkit"> 

<!--LayoutRoot is the root grid where all page content is placed--> 
<Grid x:Name="LayoutRoot" Background="Transparent"> 
    <Grid.RowDefinitions> 
     <RowDefinition Height="Auto"/> 
     <RowDefinition Height="*"/> 
    </Grid.RowDefinitions> 

    <!--TitlePanel contains the name of the application and page title--> 
    <StackPanel x:Name="TitlePanel" Grid.Row="0" Margin="12,17,0,28"> 
     <TextBlock Text="Simple Map Application with Pushpins" Style="{StaticResource PhoneTextNormalStyle}" Margin="12,0"/> 
     <TextBlock Text="Pushpins" Margin="9,-7,0,0" Style="{StaticResource PhoneTextTitle1Style}"/> 
    </StackPanel> 

    <!--ContentPanel - place additional content here--> 
    <Grid x:Name="ContentPanel" Grid.Row="1" Margin="12,0,12,0"> 
     <Controls:Map x:Name="myMap" ZoomLevel="17" Center="37.227700, -80.422037" CartographicMode="Road"> 
      <toolkit:MapExtensions.Children> 
       <toolkit:Pushpin x:Name="pushpin0" Content="My Position"/> 
       <toolkit:Pushpin x:Name="pushpin1" Content="My Position"/> 
       <toolkit:Pushpin x:Name="pushpin2" Content="My Position"/> 
      </toolkit:MapExtensions.Children> 
     </Controls:Map> 
    </Grid> 

</Grid> 

</phone:PhoneApplicationPage> 

其实有更多的引脚以复加，但我猜想，如果我得到的只是一些工作，增加更多类似的将是微不足道的。

Answer 1

您遇到的最大问题是您创建了第二个Map控件并在第一个控件上显示。

您创建的人没有ZoomLevel和Center设置。

您还没有将图钉与图钉一起添加到地图中。

给你看发生了什么事情将是你的构造函数更改为以下的最快方法：

public MainPage() 
{ 
    InitializeComponent(); 
    //Map myMap = new Map(); // You shouldn't do this as you already have a map on the page 
    MapLayer layer0 = new MapLayer(); 

    Pushpin pushpin0 = new Pushpin(); 
    //Pushpin pushpin0 = (Pushpin)this.FindName("pushpin0"); 
    //Pushpin pushpin0 = MapExtensions.GetChildren(myMap).OfType<Pushpin>().First(p => p.Name == "pushpin0"); 
    //if (pushpin0 == null) { pushpin0 = new Pushpin(); } 
    pushpin0.GeoCoordinate = new GeoCoordinate(37.228510, -80.422860); 
    MapOverlay overlay0 = new MapOverlay(); 
    overlay0.Content = pushpin0; 
    overlay0.GeoCoordinate = new GeoCoordinate(37.228510, -80.422860); 
    layer0.Add(overlay0); 

    Pushpin pushpin1 = new Pushpin(); 
    pushpin1.GeoCoordinate = new GeoCoordinate(37.226399, -80.425271); 
    MapOverlay overlay1 = new MapOverlay(); 
    overlay1.Content = pushpin1; 
    layer0.Add(overlay1); 
    Pushpin pushpin2 = new Pushpin(); 
    pushpin2.GeoCoordinate = new GeoCoordinate(37.228900, -80.427450); 
    MapOverlay overlay2 = new MapOverlay(); 
    overlay2.Content = pushpin2; 
    layer0.Add(overlay2); 

    // Add the layer with the pins in to the map 
    myMap.Layers.Add(layer0); 
    //ContentPanel.Children.Add(myMap); 
} 

然后你可以删除你在XAML中定义的引脚。