Loading records in the ASP.Net GridView while scrolling down without using Paging

Sir,

I have used a GirdView to display data from database,  data would be huge around 670 rows. And also I want to display all data together on single page.

Therefore I want to use virtual page scrolling. Means on Page load only 20 rows would be displayed, then when page would be scrolled next 20 rows would be displayed.....

Any suggestion would be helpful ...