Questions

Hi there,

If I understand correctly, what you want to achieve is to have a chart inside a BoxAnnotation, so you can drag this around the underlying chart. Is that correct?

If so, this could be achieved by re-templating the BoxAnnotation ControlTemplate to hold another chart.

The template for BoxAnnotation is quite simple. It specifies a Border with templateBindings to BorderBrush, BorderThickness, Background. Try this, for instance:

<BoxAnnotation>
   <BoxAnnotation.Template>
      <!-- Retemplate the BoxAnnotation to be anything you want -->
      <ControlTemplate TargetType="{x:Type BoxAnnotation}">
         <Border x:Name="PART_BoxAnnotationRoot" BorderBrush="{TemplateBinding BorderBrush}" Background="{TemplateBinding Background}" BorderThickness="{TemplateBinding BorderThickness}">
            <!-- Place a SciChartSurface inside the BoxAnnotation Border -->
            <s:SciChartSurface>
                <s:SciChartSurface.RenderableSeries>
                   <!-- Set DataContext of annotation equal to a ViewModel so you can bind to DataSeries property -->
                   <s:FastLineRenderableSeries DataSeries="{Binding DataSeries}"/>
                </s:SciChartSurface.RenderableSeries>
                <s:SciChartSurface.YAxis>
                   <s:NumericAxis/>
                </s:SciChartSurface.YAxis>
                <s:SciChartSurface.XAxis>
                   <s:NumericAxis/>
                </s:SciChartSurface.XAxis>
            </s:SciChartSurface>
         </Border>
      </ControlTemplate>
   </BoxAnnotation.Template>
</BoxAnnotation>

I’ve not tested the above code but it conveys the concept. You can template the BoxAnnotation to be anything you want, even placing a chart inside it. Just beware that you must set the DataContext of your BoxAnnotation equal to something (like a viewmodel) so the inner ScichartSurface can see this datacontext to bind to DataSeries.

Let me know if it helps, and post pictures of the result if you achieve it!

Best regards,
Andrew