Postback and synchronous postback

Question

Specify difference between the asynchronous postback and the synchronous postback?

Answer 1

Difference between the asynchronous and synchronous postback is as follows:

a) Asynchronous postback renders only essential part of the page; on the other hand, synchronous postback renders entire page for any postback.

b) Asynchronous postback implements only one postback at a time, which means, if you have two buttons which are doing asynchronous postback, actions may be performed one by one; while, synchronous postback implements all the actions at once.

c) Asynchronous postback only revises update panel which raises the postback; while, synchronous postback alters the entire page.