Hi Amar,
Thanks for choosing Syncfusion products.
Based on your requirement we have created a simple sample, in which all the properties of highlighted data points will be accessed and displayed in tooltip. Please download the sample from below location.
Sample:
http://www.syncfusion.com/uploads/redirect.aspx?&team=support&file=Datapoint_Property1317613809.zipPlease let us know if you have any queries.
Regards,
Saravanan.