Hi Pallini Anthony,
The IsAutoSetRange property of Chart Axis control must be set as False to initialize the manual range. The following codes illustrate the manual range initialization in C#.
C#:
//Initialize manual Range
chart.Areas[0].SecondaryAxis.IsAutoSetRange = false;
chart.Areas[0].SecondaryAxis.Range = new Syncfusion.Windows.Chart.DoubleRange(0, 100);
chart.Areas[0].SecondaryAxis.Interval = 10d;
I have attached the simple sample based on your requirement. Please let me know if you have any queries.
Thanks,
Murugavel
RangeCustomizeDemo_fc971e4c.zip