Hello Rajesh,

Thank you for your post. I have been looking into it and I can say that there's not much we can do about this since measure and arranging are integral parts of WPF/Silverlight. A way to reduce the number of measure/arrange calls however is to use deferred scrolling.

http://help.infragistics.com/NetAdvantage/WPF/2012.2/CLR4.0/?page=xamGrid_Deferred_Scrolling.html

Hope this helps you.