I have a panel with a modalpopupextender, on my panel I have a gridview with paging, when I click a paging link of the gridview that is on the panel the panel closes, I can click the button agaon to open the panel, but I would rether the panel not close when I click the page link of the gridvew.

Can anyone share with me how I can stop the panel from closing when the gridview pages?

In the gridview PageIndexChnaged event, try calling YourModalPopupExtenderId.Show();