I use for loop to loop 100 records and bind the DataTable(certain fields only) to the gridview. When I saw the gridview, there is a lot of empty rows will show at the bottom of last records. Also, the scroll bar still can scroll for the blank rows. I also set the page size as 20 to make the maximum rows of a page to 20 rows. Please find the attachment(see the red color box for the empty area) for the reference.
for (int z = 0; z < 100; z++)