Hello!

 Now im adding images represent of sensors(JPEG or PNG) over the map element for more interactivity. when i put my mouse on  the image ,a panel contains data from database will display,the panel won't disapper unitl my mouse move out of  the panel. How can I do this?

In the XmlFile,I add three Layers as following:

  <igMap:XamWebMap x:Name="map1" ElementHover="XamWebMap1_Elementhover"
                         ElementUnhover="XamWebMap_ElementUnHover">

            <igMap:XamWebMap.Layers>
                <igMap:MapLayer x:Name="statesLayer" Imported="provinceLayer_Imported">
                     <igMap:MapLayer.Reader>
                        <igMap:ShapeFileReader Uri="Shapefiles/bou2_4p"
                                               DataMapping="Caption=ADCODE93"
                                               ></igMap:ShapeFileReader>
                    </igMap:MapLayer.Reader>
                              </igMap:MapLayer>
               
                <igMap:MapLayer x:Name="symbolLayer">
                    <igMap:MapLayer.ValueTemplate>
                        <DataTemplate>
                            <Image Width="50"
                                   Height="50"
                                   Source="Shapefiles/pizza.jpg"
                                   IsHitTestVisible="False"/>
                                                </DataTemplate>
                    </igMap:MapLayer.ValueTemplate>
                </igMap:MapLayer>

                <igMap:MapLayer x:Name="hoverLayer">
                    <igMap:MapLayer.ValueTemplate>
                        <DataTemplate>
                                             <telerik:RadGridView HorizontalAlignment="Left"
                                                 Margin="195,163,0,0"
                                                 Name="radGridView1"
                                                 VerticalAlignment="Top"
                                                 ItemsSource="{Binding Source={StaticResource DataSource},Path=MyDatas}"
                                                 IsHitTestVisible="False"
                                                 IsSynchronizedWithCurrentItem="true"/>
                                                </DataTemplate>
                    </igMap:MapLayer.ValueTemplate>
                </igMap:MapLayer>

            </igMap:XamWebMap.Layers>
        </igMap:XamWebMap>

in the xml.cs file, the code as following:

 private void provinceLayer_Imported(object sender, Infragistics.Silverlight.Map.MapLayerImportEventArgs e)
        {
            if (e.Action == MapLayerImportAction.End)
            {
                // Find Element using Name property
                MapElement xinjiang = map1.Layers[0].Elements.FindElement("Caption", "630000").ElementAt<MapElement>(0);

                // Get Point data from Cartesian coordinates
                Point nyOrigin = new Point(xinjiang.WorldRect.X + 350000, xinjiang.WorldRect.Y + 300000);

                // Create Element
                SymbolElement element = new SymbolElement() { SymbolOrigin = nyOrigin, Caption = "青海省", SymbolType = MapSymbolType.None, SymbolSize = 30 };

                // Assign arbitrary value so that Value Template can be used
                element.Value = 1;

                map1.Layers[1].Elements.Add(element);

                // Make enough space in layer for the added shape
                Rect worldRect = map1.Layers[1].WorldRect;
                worldRect.Union(element.WorldRect);
                map1.Layers[1].WorldRect = worldRect;
            }
        }
        private void XamWebMap1_Elementhover(object sender, Infragistics.Silverlight.Map.mape e)
        {

            //   XamWebMap theMap = (XamWebMap)sender;
            Point pos = e.Element.ActualSymbolOrigin;
            //   pos = map1.Viewport.RootCanvas.RenderTransform.Transform(pos);
            SymbolElement element = new SymbolElement() { SymbolOrigin = pos, Caption = "青海省", SymbolType = MapSymbolType.None, SymbolSize = 30 };
            element.Value = 2;
            map1.Layers[2].Elements.Add(element);
            Rect worldRect = map1.Layers[1].WorldRect;
            worldRect.Union(element.WorldRect);
            map1.Layers[2].WorldRect = worldRect;

            Popup pop = new Popup();
            StackPanel sp1 = new StackPanel();
            pop.Child = sp1;
            pop.HorizontalOffset = pos.X;
            pop.VerticalOffset = pos.Y;
            pop.IsOpen = true;
         
        }
        private void XamWebMap_ElementUnHover(object sender, MapElementHoverEventArgs e)
        {
            map1.Layers[2].Elements.RemoveAt(0);
        }
    }