Hi Vasanth,
Thanks for using Syncfusion products.
Since SfNumericUpdown(WinRT) doesn't have a default API to disable Value changing on Scrolling, we have created a work-around sample which tries to meet your requirement.
Sample link :
SfNumericDown_Scrolling
In this sample we have derived a new class from SfNumericUpDown and handled PointerWheelChanged based on DisableValueChangeOnScroll Property.
Please let us know in case any other assistance.
Regards,
Muthukumar A