finding elements within controltemplate

YinShi

Hi, following the selections example in the help, I have the following xmal. How do I tab into the stoke property of the Ellipse control and the To property of ColorAnimation? I would like to change those properties in code behind. I've tried graphic.Symbol.ControlTemplate.SetValue (Ellipse.StrokeProperty, new SolidColorBrush(Colors.Red)); and graphic.Symbol.ControlTemplate.GetValue(Ellipse.StrokeProperty);. In either case, I got an exception.

Thanks,
yin

<Grid.Resources>
            <esriSymbols:MarkerSymbol x:Key="SelectMarkerSymbol" >
                <esriSymbols:MarkerSymbol.ControlTemplate>
                    <ControlTemplate>
                        <Ellipse x:Name="Element" Width="15" Height="15" StrokeThickness="10"
         Stroke="Green">
                            <VisualStateManager.VisualStateGroups>
                                <VisualStateGroup x:Name="SelectionStates">
                                    <VisualState x:Name="Unselected" />
                                    <VisualState x:Name="Selected">
                                        <Storyboard>
                                            <ColorAnimation Storyboard.TargetName="Element"
            Storyboard.TargetProperty="(Ellipse.Stroke).(SolidColorBrush.Color)"
            To="Cyan" Duration="00:00:0.25"/>
                                        </Storyboard>
                                    </VisualState>
                                </VisualStateGroup>
                            </VisualStateManager.VisualStateGroups>
                        </Ellipse>
                    </ControlTemplate>
                </esriSymbols:MarkerSymbol.ControlTemplate>
            </esriSymbols:MarkerSymbol>   
        </Grid.Resources

SomeGISGuy

You cannot access or modify properties within a ControlTemplate.
You would have to create a new ControlTemplate instance if you want to change it  (use XamlReader.Load(xamlString) for this).