Hello Jay,
Expanding the legend like the scenario you have described is not supported out of the box.
In order to display custom count of legend items, you can either set them manually by wiring to the BeforeLayout event like this:
or you can wire the
ItemDataBound event of RadChart. In the event handler you can set the
Name property of each individual ChartSeriesItem -- this is the value which will appear in the legend. The event arguments will hold references to the ChartSeriesItem, ChartSeries and the underlying data. It would be similar to what's shown in
this blog post, but you need to set the
Name property and not the Label's text.
Hope this helps.
Greetings,
Peshito
the Telerik team