PieChart - clicked item as parameter

[Tomasz Wisniewski]

hello,

I'm using a PieChart in my SL application. I have the interactivity settings set to this:

<telerik:PieSeriesDefinition.InteractivitySettings>
   <telerik:InteractivitySettings HoverScope="Item" SelectionMode="Single" SelectionScope="Item"/>                                            </telerik:PieSeriesDefinition.InteractivitySettings>

And then I have the trigger which binds to my ViewModel:

<telerik:ChartArea LegendName="rightChartLegend">
    <i:Interaction.Triggers>
        <i:EventTrigger EventName="ItemClick">
            <nRoute:ExecuteCommandAction Command="{Binding KliknieciePrawo, Source={StaticResource ViewModel}}"
                                         Parameter="{Binding ElementName=rightChart, Path=ClickedItem}"/>
        </i:EventTrigger>
    </i:Interaction.Triggers>
</telerik:ChartArea>

But how can I bind the clicked item on the PieChart to be passed to my ViewModel? At least the label of it?

[Giuseppe]

Hello Tomasz,

Unfortunately currently this is not possible as there are no SelectedItem/SelectedItems properties exposed that can be passed back to the ViewModel. However, we are planning to extend the Selection/Hover Interactivity API for the next official release of the control and we will make sure your scenario is enabled as well with the update.


Regards,
Freddie
the Telerik team

[Tomasz Wisniewski]

I've solved the issue by creating a converter and the values are passed to the ViewModel with no problems :)

[Shrinand]

Is SelectedItem or SelectedItems collection available to bind to in the latest release of WPF controls?

What will be a workaround? Can you please post a solution Tomasz?

Thanks.

[Bartholomeo Rocca]

Hello Shrinand,

I think the ChartArea class exposes SelectedItems / SelectedSeries properties -- you can check them out.


Greetings,
Bart.

[Shrinand]

Thanks for Replying Bartholomeo. But unfortunately there are no such properties. There are SelectItem, SelectItems, SelectSeries functions on ChartArea class.

[Bartholomeo Rocca]

Hello,

I am using the latest version of the control (2010.3.1110.1040) and I definitely see them:).

Try downloading the latest binaries again.


Greetings,
Bart.