How to stop grid refreshing

See more:

ASP.NET

Hi,
I am using aspx page to generate a popup page from that screen.I am putting an aspx link button above the grid.
I am writing the following code

ClientScriptManager.RegisterStartupScript Method (this.Gettype(), page, String, Boolean)
like this to generate a popup and page is astring variable which contains the new poppup aspx page.

So when clicking on the link button popup is generating but the page is loading and the data in the grid disappears.Whenever I am closing the popup window the data appears
,without that data is gone.

Could you please tell me solution for this.I tried with AutoPostBack for link button too and writing the data binding method after the link button clicked.

I am using Infragistics grid for this

Thanks in advance.