Is it possible in any way???
Yes.
We can use javascript's "onblur" event if it needs be
For adding a new row?
Sounds like you got a homework or someone told you about it in detail and you are putting up whatever you heard of. :)
OnBlur is needed only if you are going to have some kind of validation or dependency on the fields.
Have a look at this article for almost all scenarios of grid:
Editable Nested GridView (All-in-One)[
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