asp.net c# textbox outside update panel but inside an hidden panel is not updated

Question

I got a gridview inside an update panel with UpdateMode="Conditional" that is firing a SelectIndexChanged on each click on the rows filling a bunch of labels and a TextBox that are inside an hidden panel (connected to a ModalPopupExtender).

When I call the .Show for the ModalPopupExtender I was expecting to see the labels filled and the textbox with the data I fetched from the oracle blob but everything is empty.

If I check the .text property of the textbox is correctly filled as I expect but is not rendered when I call for the show. Any suggestion?

Answer 1

If ModalPopupExtender is inside UpdatePanel then the data will not be available unless you update the update panel. Try calling Update() method of UpdatePanel control and data should be displayed.

If ModalPopupExtender is not inside UpdatePanel, then move it inside update panel and call Update() method