how to rerfesh asp.net parent window label on closing child window

This will reload the content of the page without actually recreating the postback fired by selecting the dropdown item.

<script>
        window.onunload = refreshParent;
        function refreshParent() {
            var loc = window.opener.location;
            window.opener.location = loc;
        }
    </script>

hi have a look of this article

http://www.dotnetpools.com/2013/11/how-to-refresh-aspnet-parent-window.html[^]

I resolve it by refreshing parent page radgrid and calling refreshgrid method in parent from child.now in this method i call rebind through js that help to call needdatesource and in nedddatasource i update the label text.