'RadAreaSparkline' does not exist in XML namespace

[Rama]

Hi,

I'm getting following error while evaluating telerik control:

Error   5   The tag 'RadAreaSparkline' does not exist in XML namespace 'http://schemas.telerik.com/2008/xaml/presentation'.   C:\Local\MIS\GFX_MIS\tags\Telerik\MIS.Client\TimeSeriesReport\MainPage.xaml   12   14   FID.MIS.Presentation.TimeSeriesReport


I've declared following

xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation"

and under resources:

 <DataTemplate x:Name="sparklineTemplate">
            <telerik:RadAreaSparkline Width="108" Height="33" ItemsSource="{Binding DataPoints}" XValuePath="Key" YValuePath="Value" />
        </DataTemplate>

what dll's I need to refer to fix above problem? I'm using Silverlight and I've successfully tested RadGridView but unable to test charting!

Thanks

[Rama]

Fixed it : http://www.telerik.com/community/forums/silverlight/sparkline/how-to-add-sparkline-control-thorough-vs-2010.aspx