Use of Atlas Control Toolkit (1)

I want to use modalpopupextender to make a pop-up query window and test it. It is simple, but if a gridview is displayed, I need to flip the page. It cannot be sent back to the server. I guess I have to wait for the next version. Because the Panel is on the same page, the ASP control will generate a request server, and modalpopupextender will not judge whether the operation is generated by modalpopup. I will test the updatepanel of Atlas to see if it can be sent back. Or not.
We have to use showmodaldialog.