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PieChart - clicked item as parameter

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Tomasz Wisniewski
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Tomasz Wisniewski asked on 12 Aug 2010, 11:14 AM
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?

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Giuseppe
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answered on 17 Aug 2010, 10:17 PM
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
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Tomasz Wisniewski
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answered on 17 Aug 2010, 10:40 PM
I've solved the issue by creating a converter and the values are passed to the ViewModel with no problems :)
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Shrinand
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answered on 18 Nov 2010, 10:27 PM
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.
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Bartholomeo Rocca
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answered on 19 Nov 2010, 04:49 PM
Hello Shrinand,

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


Greetings,
Bart.
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Shrinand
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answered on 19 Nov 2010, 05:29 PM
Thanks for Replying Bartholomeo. But unfortunately there are no such properties. There are SelectItem, SelectItems, SelectSeries functions on ChartArea class.


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Bartholomeo Rocca
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answered on 19 Nov 2010, 06:21 PM
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.
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Tomasz Wisniewski
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Giuseppe
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Tomasz Wisniewski
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Shrinand
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Bartholomeo Rocca
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