I have a dropdown on my ASPX page that auto postbacks when re-selected.  I also have a ModalPopup on the same page inside of a DIV tag. When reselecting the dropdown box the ModalPopup flashes visible for a second during the postback. How can i stop this?

You can start by showing your HTML.

Hi mrrogers,

Please add this code“style=’display:none’” into the ModalPopup’s PopupControl panel tag. Then, this panel would not flash when the page is reloaded.

Best regards,

Zhi-Qiang Ni

That works; but I have the following style property that needs to be set in order for it to display properly:

style="border: 1px solid black; background-color: white; padding: 10px; width: 300px;"

How do I dynamically change this style property on my div when displaying the modal?

Bump.

Hi mrrogers,

The “display:none” property is only achieved when the page is loaded, the popup would be shown when you would like to show the ModalPopup by clicking the target button. The display property would be changed to “block” dynamically by the ModalPopupBehavior. So, please don’t worry about this setting, it can be mixed with your style.

Best regards,

Zhi-Qiang Ni

The last one solves the problem:

http://forums.asp.net/p/1038752/1441312.aspx