As far as I know, you cannot prevent the grid from doing a post-back or an ajax request as
it needs to rebind itself in order for those operations to be
completed. You can use ajax to achieve a seamless updating of the user
interface by wrapping the grid in a RadAjaxPanel or using the
RadAjaxManager control. One suggestion is you can use client side binding as explained in the following demo. Grid / Declarative Binding