On converting to csv - this is a data only format and it cannot be used for a chart. Thus, I advise you look into ways to export your actual data source to your user as you do not need a chart for this.
Do you want to have your say when we set our development plans?
Do you want to know when a feature you care about is added or when a bug fixed?
Telerik Feedback Portal
and vote to affect the priority of the items