Hi Xu Shi,
Thanks for your interest in Syncfusion products.
I have attached the modified sample in the below link.
Sample Link:
http://files.syncfusion.com/support/Chart.Windows/v7.3.0.20/F89834/F89834Sample/main.htmWe have used grouping concept to handle large amount of data. Please refer 'ChartOversizedDataBindModel.cs' class file
in the sample and the below link for more details about the Grouping concepts. But, It is no need to analyze the
concepts to use this given Chart sample.
Grouping Reference Links:
http://help.syncfusion.com/ug_73/grouping/Sorting1.html http://help.syncfusion.com/ug_73/grouping/default.htmlPlease let us know if you have any other queries.
Regards,
Venkat.