GridView Footer Template row javascript block none on button click

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C#

ASP.NET

Javascript

C#4.0

, +

Hi,,
I am using nested gridview with each parent record has a child gridview, I am able to make the footer row[using for data insertion] visible in the child grid, on clicking add button in the parent row, in button click event. But it raises a postback, this is not desired, I want to do the same using javascript client click event.In the sense, on clicking add button in the parent row, I want to show footer template row in the child grid for data insertion, clicking cancel button in the footer row, the child footer row has to be hidden.

I am using the 'AllInOne' gridview presented as an article in code project.

here it is:Editable Nested GridView (All-in-One)[^]

Thank you.........