showModalDialog and postbacks in ASP.NET
Posted by Virendra Dugar on March 23, 2009
Finally I found a solution which is very simple by just including the below tag in the <head> section of the modal Window.
And also we need to set the output cache property to “1” otherwise next time when you try to open the modal window, it will take it from cache.
<% @ OutputCache Duration="1" VaryByParam="none"%>