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））

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