How to refresh parent window after close the popup window

Question

Hi sir,
  Tell me the steps to refresh the parent window after closing the child [popup] window.

In parent window , i have a gridview which display all the user details. If i click the view button, it will
display the corresponding record in popup window.

In Child window, i have a details view in which the user can edit the individual details depending on
selection in gridview. After finish updating the records in detailsview, i have to close the popup and
the updated values should be update in the parent window.


Kindly give me the solution for this problem.