Hi Nick,
ChartLegendRepresentationType enumeration has symbols,series type and series image as its members. When you set the legend representation it will affect all the legends in the collection. Individual series types are not included in the Representation type because changing the representation type will change the legend type not for the individual series but for the entire collection.
When a series is drawn, the legend picks up its item type (as the Representation type is set to Series Type) from the ChartLegendItemType enumerations.
It is possible to set the legend item type for each series by setting the series.LegendItem type as appropriate.
Note:
This feature is available with the latest release of Essential Studio which is available for download in the thread linked below:
http://www.syncfusion.com/Support/forums/message.aspx?MessageID=41784
Please let me know if this helps you.
Thanks and Regards,
Geetha.