ChartTrackBallBehavior.TrackInfoUpdated doesn't compile

[Jesper]

I'm currently trying to template the TrackBallInfo popup and in doing so I hoped to be able to use the behavior's "TrackInfoUpdated" event.

This is the XAML:

<chart:RadCartesianChart.Behaviors>
    <chartView:ChartPanAndZoomBehavior
        ZoomMode="Horizontal" />
    <chartView:ChartTrackBallBehavior
        ShowTrackInfo="True"
        ShowIntersectionPoints="True"
         TrackInfoUpdated="trackBallInfoUpdated" />
</chart:RadCartesianChart.Behaviors>

... and here's the code behing event handler ...

private void trackBallInfoUpdated(object sender, TrackBallInfoEventArgs e)
{
    // exploring TrackBallInfoUpdated event ...
    foreach (var info in e.Context.DataPointInfos)
    {
        info.DisplayContent = "DataItem=" + info.DataPoint.DataItem;
    }
    e.Header = "Test Header";
}

When I build this I get this errors from the compiler:

-----
Error   5   The type or namespace name 'Windows' does not exist in the namespace 'Spike.Telerik' (are you missing an assembly reference?)   C:\Users\Jesper\Documents\Visual Studio 2010\Projects\Spike.Telerik.RadChartView\GvsDefectsChartControl.xaml    66  23  Spike.Telerik.RadChartView
-----
Error   6   The type or namespace name 'Windows' does not exist in the namespace 'Spike.Telerik' (are you missing an assembly reference?)   C:\Users\Jesper\Documents\Visual Studio 2010\Projects\Spike.Telerik.RadChartView\GvsDefectsChartControl.xaml    66  135 Spike.Telerik.RadChartView
-----
Error   7   No overload for 'EventHandler' matches delegate 'System.EventHandler<Windows.Controls.ChartView.TrackBallInfoEventArgs>'    C:\Users\Jesper\Documents\Visual Studio 2010\Projects\Spike.Telerik.RadChartView\GvsDefectsChartControl.xaml    66  103 Spike.Telerik.RadChartView

The first two are quite surprising. So far as I've seen they only show up when I try using this event. The third error is just weird. I checked and double checked and the method seem to fully comply with the expected event handler signature. 

Any assistance would be greatly appreciated!

[Petar Marchev]

Hello Jesper,

Thank you for the attached code snippets, I was able to create a simple project with them. I have copy pasted your code and filled in the missing things, such as the namespaces chart and chartView. The project compiles and runs as expected. The only thing I can suggest for you to try is to make sure that the chart and chartView namespaces reference the Chart assembly and the ChartView namespace:

<Window
xmlns:chart="clr-namespace:Telerik.Windows.Controls;assembly=Telerik.Windows.Controls.Chart"
xmlns:chartView="clr-namespace:Telerik.Windows.Controls.ChartView;assembly=Telerik.Windows.Controls.Chart" />

or as in the attached project - the telerik schema.

I have attached this small project to this post, so that you can download it and see if you get the same behavior. If you keep experiencing issues with this I will ask that you open a support ticket and provide us with a small project that reproduces these errors. 

Greetings,
Petar Marchev
the Telerik team

[Jesper]

Thank you for this suggestion. Unfortunately I still get the exact same compiler errors. I have tried using the assembly references as well as the Telerik schema but the result is the same.

[Petar Marchev]

Hello Jesper,

You did not mention if the project that I had attaches compiled properly.

I suspect that this is more of a dll problem, and not a code problem. Try to remove the assembly references and add them again. Also clean the project by  deleting the bin and obj folders.

If this issue persists I will again ask that you open a new support ticket and provide us with a small project that reproduces this undesired behavior.

All the best,
Petar Marchev
the Telerik team