[Solved] Crash on launch (race condition)

[Dan]

My main app page has a chart on it with the following:

<telerikChart:ChartTrackBallBehavior ShowIntersectionPoints="False"
                                     ShowInfo="True"
                                     TrackInfoUpdated="OnTrackInfoUpdated">
    <telerik:ChartTrackBallBehavior.LineStyle>
        <Style TargetType="Polyline">
            <Setter Property="Fill" Value="Transparent" />
        </Style>
    </telerik:ChartTrackBallBehavior.LineStyle>
</telerikChart:ChartTrackBallBehavior>

If I move my move my mouse around as my app launches, sometimes I hit an unhandled exception with the following stack:

System.ArgumentNullException

   at Telerik.UI.Xaml.Controls.Chart.ChartTrackBallBehavior.GetTrackInfoTemplate(DependencyObject instance)

   at Telerik.UI.Xaml.Controls.Chart.ChartTrackBallBehavior.BuildIndividualTrackInfos(ChartDataContext context)

   at Telerik.UI.Xaml.Controls.Chart.ChartTrackBallBehavior.UpdateTrackInfo(ChartDataContext context)

   at Telerik.UI.Xaml.Controls.Chart.ChartTrackBallBehavior.UpdateVisuals()

   at Telerik.UI.Xaml.Controls.Chart.ChartTrackBallBehavior.OnChartUIUpdated()

   at Telerik.UI.Xaml.Controls.Chart.RadChartBase.NotifyUIUpdated()

   at Telerik.UI.Xaml.Controls.Chart.RadChartBase.OnUIUpdated()

   at Telerik.UI.Xaml.Controls.Chart.PresenterBase.UpdateUI(ChartLayoutContext context)

   at Telerik.UI.Xaml.Controls.Chart.RadChartBase.CallUpdateUI()

   at Telerik.UI.Xaml.Controls.Chart.RadChartBase.ArrangeOverride(Size finalSize)

Any ideas how to work around this? I don't have a simple repro case at this point.

Thanks

[Ivaylo Gergov]

Hello Dan,

Thank you for using our RadControls for Windows 8!

Unfortunately I am still unable to reproduce the described behavior in my local tests. Could you elaborate a bit more on your specific scenario -- do you use the default TrackInfoTemplate or you have defined custom one? Did you manage to isolate the issue in a stand-alone project or is it reproducible only in your production app? If you cannot send the application, can you send the chart declaration so I can review it locally and try to pinpoint the reason for the erroneous issue.

I am looking forward to your reply.

 

Greetings,
Ivaylo Gergov
the Telerik team