SASanthiya Arulsamy Syncfusion Team July 5, 2016 12:56 PM UTC
Thanks for contacting Syncfusion Support.
We can able to determine the visible items by configuring the visible minimum and maximum in the ActualRangeChanged event of chart axis. In this case no need to modify the collection which bound to chart series ItemsSource property. Please provide more information/use case on your requirement, it will helpful to serve you a better solution.