Hello Lurie ,
Currently, RadChart does not expose any property for this and the only way you could do this is to use the
SeriesItemLabelStyle property of the series definition to change the template of the label controls.
Here is a sample code:
As for your second question - currently we have no plans to implement such functionality in the near future.
Hope this will help.
All the best,
Velin
the Telerik team