ArcGIS API for Silverlight 地圖元素點閃爍，線流動顯示的處理方式

<Grid x:Name="LayoutRoot" Background="White">        <!--地圖資源樣式模版-->        <Grid.Resources>            <!--預警閃爍標記符號-->            <esri:MarkerSymbol x:Name="DefaultMarkerSymbol">                <esri:MarkerSymbol.ControlTemplate>                    <ControlTemplate>                        <Canvas>                            <vsm:VisualStateManager.VisualStateGroups>                                <vsm:VisualStateGroup x:Name="CommonStates">                                    <vsm:VisualState x:Name="Normal">                                        <Storyboard RepeatBehavior="Forever">                                            <DoubleAnimation BeginTime="00:00:00" Storyboard.TargetName="ellipse" Storyboard.TargetProperty="(UIElement.RenderTransform).(ScaleTransform.ScaleX)" From="1" To="5" Duration="00:00:02" />                                            <DoubleAnimation BeginTime="0:0:0" Storyboard.TargetName="ellipse" Storyboard.TargetProperty="(UIElement.RenderTransform).(ScaleTransform.ScaleY)" From="1" To="5" Duration="00:00:02" />                                            <DoubleAnimation BeginTime="00:00:00" Storyboard.TargetName="ellipse" Storyboard.TargetProperty="(UIElement.Opacity)" From="1" To="0" Duration="00:00:02" />                                        </Storyboard>                                    </vsm:VisualState>                                </vsm:VisualStateGroup>                            </vsm:VisualStateManager.VisualStateGroups>                            <Ellipse Height="25" Width="25" Canvas.Left="0" Canvas.Top="0" RenderTransformOrigin="0.5,0.5" x:Name="ellipse" IsHitTestVisible="False">                                <Ellipse.RenderTransform>                                    <ScaleTransform />                                </Ellipse.RenderTransform>                                <Ellipse.Fill>                                    <RadialGradientBrush>                                        <GradientStop Color="#00FF0000" />                                        <GradientStop Color="#FFFF0000" Offset="0.25" />                                        <GradientStop Color="#00FF0000" Offset="0.5" />                                        <GradientStop Color="#FFFF0000" Offset="0.75" />                                        <GradientStop Color="#00FFFFFF" Offset="1" />                                    </RadialGradientBrush>                                </Ellipse.Fill>                            </Ellipse>                            <Ellipse Height="20" Width="20" Canvas.Left="0" Canvas.Top="0" Fill="#FFFFFFFF" x:Name="ellipse1" />                        </Canvas>                    </ControlTemplate>                </esri:MarkerSymbol.ControlTemplate>            </esri:MarkerSymbol>           <!--線層流動顯示-->            <esri:LineSymbol x:Key="CustomAnimatedRedLineSymbol">                <esri:LineSymbol.ControlTemplate>                    <ControlTemplate >                        <Grid>                            <VisualStateManager.VisualStateGroups>                                <VisualStateGroup x:Name="CommonStates">                                    <VisualState x:Name="Normal">                                        <Storyboard RepeatBehavior="Forever">                                            <DoubleAnimation BeginTime="0:0:0" Storyboard.TargetName="Element" Storyboard.TargetProperty="StrokeDashOffset" To="1000" Duration="0:3:0" />                                        </Storyboard>                                    </VisualState>                                </VisualStateGroup>                            </VisualStateManager.VisualStateGroups>                            <Path x:Name="Element" StrokeDashArray="2,1" StrokeDashOffset="0" Stroke="Blue" StrokeThickness="2" />                        </Grid>                    </ControlTemplate>                </esri:LineSymbol.ControlTemplate>            </esri:LineSymbol>     </Grid.Resources></Grid>                 //點閃爍                Graphic g = new Graphic()                {                    Geometry = mercator.FromGeographic(new MapPoint(double.Parse(findResult.Latitute.ToString().Trim()), double.Parse(findResult.Longitute.ToString().Trim()))),                    Symbol = LayoutRoot.Resources["DefaultMarkerSymbol"] as Symbol                };                 //線流動顯示                Graphic g = new Graphic()                 {                             Geometry = mp,                             Symbol = LayoutRoot.Resources["RedMarkerSymbol"] as Symbol                 };