AJAX :: Stop ModalPopupExtender From Closing Every Postback?

Sep 25, 2008

I've placed a ModalPopupExtender in a WebUserControl to gather and display information to the user. The problem is that, whenever ANY button is clicked, or DropDown control is changed (i.e., anything that causes a postback), the ModalPopupExtender closes. This is not the desired behavior. Taking some advice from a coworker, I've placed a "dummy" button in the Web User Control in the same area of the OK/Cancel buttons, and set its display style to "none". Then I assigned the TargetControlID, OKControlID and CancelControlID to the dummyButton. After that, in the code-behind page I used an UpdatePanel1.FindControl(). FindControl() to delve into and retrieve the ModalPopupExtender, and use its Show() method to start it up. This worked just fine, but even with the OK/Cancel buttons set to a currently non-button, every control that causes a postback closes the modal window. I was also advised to try moving the control containing the ModalPopupExtender out of the UpdatePanel (I'm aware that was just grasping at straws), but this caused a run-time error. I'm am not a super JavaScript guru, and would prefer to find a solution that doesn't require an exhaustive journey into that realm. What I want is to explicitly open and close the modal window via my C# code, and not to have it close every time the user does something in it.

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