I have a TextBox, Button and GridView.
User can enter the number in textbox and press ok buton. That many rows should get added to gridview. This much I achieved.
My issue is that if user wants to add some more rows below existing rows by clicking the same button again then all the existing data gets refreshed and fresh rows get added.
How to persist the same data and only new rows get added on the same button click?
Thanks in advance.