前台

<UserControl x:Class="ArcGISSilverlightSDK.GraphicsMapTip"     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"     xmlns:esri="http://schemas.esri.com/arcgis/client/2009">     <Grid x:Name="LayoutRoot">

        <Grid.Resources>             <esri:SimpleFillSymbol x:Key="DefaultFillSymbol" Fill="#01FFFFFF" BorderBrush="#88000000"                                           BorderThickness="2" />             <esri:SimpleMarkerSymbol x:Key="DefaultMarkerSymbol" Color="Red" Size="6" Style="Diamond" />         </Grid.Resources>

        <esri:Map x:Name="MyMap" WrapAround="True" Extent="-15000000,2000000,-7000000,8000000">             <esri:ArcGISTiledMapServiceLayer ID="BaseMapLayer"                         Url="http://services.arcgisonline.com/ArcGIS/rest/services/World_Street_Map/MapServer" />

            <esri:GraphicsLayer ID="StatesGraphicsLayer">                 <esri:GraphicsLayer.MapTip>                     <Border esri:GraphicsLayer.MapTipHideDelay="00:00:01.5" CornerRadius="10" BorderBrush="#FF222957" BorderThickness="3" Margin="0,0,15,15">                         <Border.Background>                             <LinearGradientBrush EndPoint="1.038,1.136" StartPoint="0.015,0.188">                                 <GradientStop Color="#FFD1DFF2"/>                                 <GradientStop Color="#FF092959" Offset="0.946"/>                             </LinearGradientBrush>                         </Border.Background>                         <Border.Effect>                             <DropShadowEffect ShadowDepth="10" BlurRadius="14" Direction="300" />                         </Border.Effect>                         <StackPanel Orientation="Vertical" Margin="20,15,20,15">                             <StackPanel Orientation="Horizontal" Margin="0,0,0,6">                                 <TextBlock Text="State Name: " FontWeight="Bold" Foreground="#FF0F274E" FontSize="12" />                                 <TextBlock Text="{Binding [STATE_NAME]}" Foreground="#FFFFFFFF" FontSize="12" FontStyle="Italic" FontFamily="Portable User Interface" />                             </StackPanel>                             <StackPanel Orientation="Horizontal">                                 <TextBlock Text="Population 2007: " FontWeight="Bold" Foreground="#FF0F274E" FontSize="12" />                                 <TextBlock Text="{Binding [POP2007]}" Foreground="#FFFFFFFF" FontSize="12" FontStyle="Italic" FontFamily="Portable User Interface" />                             </StackPanel>                         </StackPanel>                     </Border>                 </esri:GraphicsLayer.MapTip>             </esri:GraphicsLayer>

            <esri:GraphicsLayer ID="CitiesGraphicsLayer">                 <esri:GraphicsLayer.MapTip>                     <Border BorderBrush="DarkGray" CornerRadius="13" BorderThickness="1" Margin="0,0,15,15">                         <Border.Effect>                             <DropShadowEffect ShadowDepth="10" BlurRadius="14" Direction="300" />                         </Border.Effect>                         <Border CornerRadius="10" Background="#DDFFEEEE" BorderThickness="5" BorderBrush="#77FF0000">                             <StackPanel Orientation="Vertical" HorizontalAlignment="Center" Margin="10">                                 <StackPanel Orientation="Horizontal">                                     <TextBlock Text="City Name: " FontWeight="Bold" Foreground="#FF0F274E" FontSize="10" VerticalAlignment="Center"/>                                     <TextBlock Text="{Binding [CITY_NAME]}" HorizontalAlignment="Left" VerticalAlignment="Center" />                                 </StackPanel>                                 <StackPanel Orientation="Horizontal">                                     <TextBlock Text="Population: " FontWeight="Bold" Foreground="#FF0F274E" FontSize="10" VerticalAlignment="Center" />                                     <TextBlock Text="{Binding [POP1990]}" HorizontalAlignment="Left" VerticalAlignment="Center" />                                 </StackPanel>                             </StackPanel>                         </Border>                     </Border>                 </esri:GraphicsLayer.MapTip>             </esri:GraphicsLayer>

        </esri:Map>

        <Grid HorizontalAlignment="Right" VerticalAlignment="Top" Margin="0,10,10,0" >             <Rectangle Fill="#77919191" Stroke="Gray"  RadiusX="10" RadiusY="10" Margin="0,0,0,5" >                 <Rectangle.Effect>                     <DropShadowEffect/>                 </Rectangle.Effect>             </Rectangle>             <Rectangle Fill="#DDFFFFFF" Stroke="DarkGray" RadiusX="5" RadiusY="5" Margin="10,10,10,14" Height="42" />             <TextBlock Text="Hover over a state or city to see the GraphicsLayer MapTip." TextAlignment="Center" Margin="25,25,25,25" />         </Grid>

    </Grid> </UserControl>

后台

using System; using System.Windows.Controls; using ESRI.ArcGIS.Client.Tasks;

namespace ArcGISSilverlightSDK {   public partial class GraphicsMapTip : UserControl   {     public GraphicsMapTip()     {       InitializeComponent();

      MyMap.PropertyChanged += MyMap_PropertyChanged;     }

    void MyMap_PropertyChanged(object sender, System.ComponentModel.PropertyChangedEventArgs e)     {       if (e.PropertyName == "SpatialReference")       {         StatesGraphicsLayerLoad();         CitiesGraphicsLayerLoad();         MyMap.PropertyChanged -= MyMap_PropertyChanged;       }     }

    void StatesGraphicsLayerLoad()     {       ESRI.ArcGIS.Client.Tasks.Query query = new ESRI.ArcGIS.Client.Tasks.Query()       {         Geometry = new ESRI.ArcGIS.Client.Geometry.Envelope(-180, 0, 0, 90) { SpatialReference = new ESRI.ArcGIS.Client.Geometry.SpatialReference(4326) },                       ReturnGeometry = true,         OutSpatialReference = MyMap.SpatialReference       };       query.OutFields.Add("*");

      QueryTask queryTask = new QueryTask("http://sampleserver1.arcgisonline.com/ArcGIS/rest/services/Demographics/ESRI_Census_USA/MapServer/5");       queryTask.ExecuteCompleted += StatesGraphicsLayerQueryTask_ExecuteCompleted;       queryTask.ExecuteAsync(query);     }

    void StatesGraphicsLayerQueryTask_ExecuteCompleted(object sender, ESRI.ArcGIS.Client.Tasks.QueryEventArgs queryArgs)     {       if (queryArgs.FeatureSet == null)         return;

      FeatureSet resultFeatureSet = queryArgs.FeatureSet;       ESRI.ArcGIS.Client.GraphicsLayer graphicsLayer =       MyMap.Layers["StatesGraphicsLayer"] as ESRI.ArcGIS.Client.GraphicsLayer;

      if (resultFeatureSet != null && resultFeatureSet.Features.Count > 0)       {         foreach (ESRI.ArcGIS.Client.Graphic graphicFeature in resultFeatureSet.Features)         {           graphicFeature.Symbol = LayoutRoot.Resources["DefaultFillSymbol"] as ESRI.ArcGIS.Client.Symbols.Symbol;           graphicsLayer.Graphics.Add(graphicFeature);         }       }     }

    private void CitiesGraphicsLayerLoad()     {       ESRI.ArcGIS.Client.Tasks.Query query = new ESRI.ArcGIS.Client.Tasks.Query()       {         Geometry = new ESRI.ArcGIS.Client.Geometry.Envelope(-180, 0, 0, 90) { SpatialReference = new ESRI.ArcGIS.Client.Geometry.SpatialReference(4326) },         ReturnGeometry = true,         OutSpatialReference = MyMap.SpatialReference       };       query.OutFields.Add("*");       query.Where = "POP1990 > 100000";       QueryTask queryTask = new QueryTask("http://sampleserver1.arcgisonline.com/ArcGIS/rest/services/Specialty/ESRI_StatesCitiesRivers_USA/MapServer/0");       queryTask.ExecuteCompleted += CitiesGraphicsLayerQueryTask_ExecuteCompleted;       queryTask.ExecuteAsync(query);     }

    void CitiesGraphicsLayerQueryTask_ExecuteCompleted(object sender, QueryEventArgs queryArgs)     {       if (queryArgs.FeatureSet == null)         return;

      FeatureSet resultFeatureSet = queryArgs.FeatureSet;       ESRI.ArcGIS.Client.GraphicsLayer graphicsLayer =       MyMap.Layers["CitiesGraphicsLayer"] as ESRI.ArcGIS.Client.GraphicsLayer;

      if (resultFeatureSet != null && resultFeatureSet.Features.Count > 0)       {         foreach (ESRI.ArcGIS.Client.Graphic graphicFeature in resultFeatureSet.Features)         {           graphicFeature.Symbol = LayoutRoot.Resources["DefaultMarkerSymbol"] as ESRI.ArcGIS.Client.Symbols.Symbol;           graphicsLayer.Graphics.Add(graphicFeature);         }       }     }   } }

maptip属性