Any one can help me..!

Work on ASP.NET Visual Studio 2010 C#. I have a page. From this page I need to call a page on popup. On the popup page selected value will be set on the parent page text control.

1. One parent page
2. One child page.
3. Call parent to child as popup.
4. On popup window contain a grid.
5. On popup grid have command select,click on select close popup and selected value will set on parent page text control.