Hi Premith,
Sorry for the delay on getting back with this .
We have analyzed your requirement and prepared a simple sample based on this. Please find the sample in the attachment. For finding the references of classes in Chart, please refer our User Guide Documentation( http://help.syncfusion.com/User%20Interface/WPF/Chart).
Please let us know, if you have any queries.
Regards,
Michael Prabhu
LegendItem_c35492db.zip