TrackBall Info Template Decimal Places

[Gareth]

I'm trying to format the String output for my Series Trackball so that it only shows 2 decimal places.  The code I have at the moment for my Template is as follows:

<telerik:RadCartesianChart.Resources>
<sys:String x:Key="CategoryFormat">Date: {0}</sys:String>
<sys:String x:Key="ValueFormat">Value: {0:n2}</sys:String>

<DataTemplate x:Key="seriesTrackBallInfoTemplate">
      <StackPanel Orientation="Vertical">
       <TextBlock Text="{Binding Path=MeasurementData.Category, StringFormat={StaticResource CategoryFormat}}" />
        <TextBlock Text="{Binding Path=MeasurementData.Value, StringFormat={StaticResource ValueFormat}}" />
        </StackPanel>
</DataTemplate>
 </telerik:RadCartesianChart.Resources>

The type of MeasurementData.Value is Double.

I've tried various approaches and nothing seems to work.

Any suggestions?

 

 

[Gareth]

Nevermind.  Used a Double to String Converter and put my formatter settings in there.

[Gareth]

Turns out that didn't work either. Is it possible to edit the DisplayContent of the TrackballInfoTemplate to remove the huge amounts of decimal points?

[Ivan]

Hello Gareth,

As we look at your code and the picture it seems that the TrackballInfoTemplate is not applied and the series is using its default template. 

Also, keep in mind that the DataContext passed in the template is not the view model of the data point, but an object of type DataPointInfo. So, in order to get your view model you can use the following syntax:

<TextBlock Text="{Binding Path=DataPoint.DataItem.Value}" />

You can also take a look at the attached project where this approach is demonstrated.
 
Please let us know if this solution works for you.

Regards,
Ivan
Telerik