supermap学习系列之silverlight--添加可拖拽的定位图钉（方法二之超图自带类（Pushpin、InfoWindow））

来源：互联网发布：网络摄像头安装调试编辑：程序博客网时间：2024/05/07 16:55

接着上一篇，添加可以拖拽的图钉。这次采用超图本身的接口。Pushpin和InfoWindow类。

xaml代码：

 <Grid x:Name="LayoutRoot" Background="White">        <Grid.Resources>            <DataTemplate x:Key="LocationInfoWindowTemplate">                <StackPanel Width="312" Height="150">                                   <Grid Margin="5">                        <Grid.RowDefinitions>                            <RowDefinition />                            <RowDefinition />                            <RowDefinition />                            <RowDefinition />                        </Grid.RowDefinitions>                        <Grid.ColumnDefinitions>                            <ColumnDefinition Width="40" />                            <ColumnDefinition />                        </Grid.ColumnDefinitions>                                               <TextBlock VerticalAlignment="Center" Text="经度：" Grid.Row="0" Grid.Column="0"/>                        <TextBlock VerticalAlignment="Center" Text="纬度：" Grid.Row="1" Grid.Column="0"/>                        <TextBlock VerticalAlignment="Center" Text="类型：" Grid.Row="2" Grid.Column="0"/>                        <TextBox Margin="0,5,0,5" x:Name="txtLongitudePopup" Text="老的经度" Grid.Row="0" Grid.Column="1" Grid.ColumnSpan="2" />                        <TextBox Margin="0,5,0,5" x:Name="txtLatitudePopup" Text="老的纬度" Grid.Row="1" Grid.Column="1" Grid.ColumnSpan="2"/>                        <ComboBox x:Name="cboxPopConType" Margin="0,5,0,10" Grid.Row="2" Grid.Column="1">                            <ComboBoxItem Tag="road" Content="道路" IsSelected="True"></ComboBoxItem>                            <ComboBoxItem Tag="bridge" Content="桥梁"></ComboBoxItem>                            <ComboBoxItem Tag="river" Content="河流"></ComboBoxItem>                            <ComboBoxItem Tag="farmland" Content="农田"></ComboBoxItem>                        </ComboBox>                        <StackPanel HorizontalAlignment="Right" Grid.Row="3" Grid.Column="0" Grid.ColumnSpan="2" Orientation="Horizontal">                            <Button x:Name="btnPopSaveConLonLat" Click="btnPopSaveConLonLat_Click_1" Content="保存" Width="70"/>                            <Button x:Name="btnPopCancel" Click="btnPopCancel_Click_1" Content="取消" Width="70"/>                        </StackPanel>                    </Grid>                </StackPanel>            </DataTemplate>        </Grid.Resources>        <ic:Map x:Name="MyMap">            <!--地图地址   自己填写-->            <is:TiledDynamicRESTLayer Url="<a target=_blank href="http://localhost:8090/iserver/services/map-china400/rest/maps/China">http://localhost:8090/iserver/services/map-china400/rest/maps/China</a>" />          </ic:Map>              <Button x:Name="btnDrag" Content="点击" Height="23" Width="75" Click="btnDrag_Click_1" Margin="0,0,925,277" />    </Grid>

.cs后台代码：

<p>namespace SL{    public partial class MainPage : UserControl    {        private ElementsLayer Drag_ElementsLayer = new ElementsLayer();        public MainPage()        {            InitializeComponent();        }                              private void btnDrag_Click_1(object sender, RoutedEventArgs e)        {            //获取数据模版中的控件   开始想给他赋值  但是没有实现   只可以读取。初步认为是他的原因：dataTemplate.LoadContent()            DataTemplate dataTemplate = LayoutRoot.Resources["LocationInfoWindowTemplate"] as System.Windows.DataTemplate;            Grid grid = (Grid)VisualTreeHelper.GetChild(dataTemplate.LoadContent(), 0);            ComboBox cbox = (ComboBox)grid.FindName("cboxPopConType");            TextBox txtLon = (TextBox)grid.FindName("txtLongitudePopup");            TextBox txtLat = (TextBox)grid.FindName("txtLatitudePopup");            txtLon.Text = "新的经度";            txtLat.Text = "新的纬度";</p><p>            Drag_ElementsLayer.Children.Clear();            Pushpin p = new Pushpin();            InfoWindow window = new InfoWindow(MyMap);            window.ContentTemplate = LayoutRoot.Resources["LocationInfoWindowTemplate"] as System.Windows.DataTemplate;            window.Title = "合同地理位置信息";            bool isMouseCaptured = false;            p.MouseLeftButtonDown += (obj, ee) =>            {                isMouseCaptured = true;                MyMap.ScreenContainer.Children.Remove(window);                MyMap.ScreenContainer.Children.Add(window);                window.Location = p.Location;                window.ShowInfoWindow();            };            p.MouseMove += (obj, ee) =>            {                if (isMouseCaptured)                {                    MyMap.Action = null;                    Point2D new_point2d = MyMap.ScreenToMap(new Point(ee.GetPosition(null).X, ee.GetPosition(null).Y+37));                    p.Location = new_point2d;                    window.CloseInfoWindow();                }            };            p.MouseLeftButtonUp += (obj, ee) =>            {                isMouseCaptured = false;                MyMap.Action = new Pan(MyMap);                Point2D new_point2d = MyMap.ScreenToMap(new Point(ee.GetPosition(null).X, ee.GetPosition(null).Y+37));                p.Location = new_point2d;                window.Location = p.Location;                window.ShowInfoWindow();            };            p.Location = MyMap.Center;            p.Background = new SolidColorBrush(Colors.Blue);            Drag_ElementsLayer.AddChild(p);            MyMap.Layers.Add(Drag_ElementsLayer);        }             private void btnPopSaveConLonLat_Click_1(object sender, RoutedEventArgs e)        {            DataTemplate dataTemplate = LayoutRoot.Resources["LocationInfoWindowTemplate"] as System.Windows.DataTemplate;            Grid grid = (Grid)VisualTreeHelper.GetChild(dataTemplate.LoadContent(), 0);            ComboBox cbox = (ComboBox)grid.FindName("cboxPopConType");            ComboBoxItem item = cbox.SelectedItem as ComboBoxItem;            TextBox txtLon = (TextBox)grid.FindName("txtLongitudePopup");            TextBox txtLat = (TextBox)grid.FindName("txtLatitudePopup");</p><p>            MessageBox.Show("经度：" + txtLon.Text + "\n" + "纬度：" + txtLat.Text + "\n" + "类型：" + item.Tag.ToString());        }</p><p>        private void btnPopCancel_Click_1(object sender, RoutedEventArgs e)        {            MyMap.ScreenContainer.Children.Clear();            Drag_ElementsLayer.Children.Clear();            MyMap.Layers.Remove(Drag_ElementsLayer);        }      }}</p>

初始化截图，如下：

点击按钮添加图钉，左键图钉弹出交互窗口，接着拖动图钉。截图如下：

点击“取消”按钮删除图钉和图层。点击“保存”截图如下：

唉，可能您也发现了，想要得到数据模版的控件并且给他赋值但是没有实现只可以读取。初步认为是他的原因：dataTemplate.LoadContent()。

如果有哪位大神可以做到，请留言。交流一下。刚开始学习，不熟练。谢谢。

源码下载：http://download.csdn.net/detail/duyelang/7797581

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