I've check the example, still cannot find the solution.
Here is my code structure
<UpdatePanel>
<FormView>
....
<CuteEditor />
<Button />
....
</FormView>
</UpdatePanel>
<ModalPopupExtender />
<Panel>
<CuteEditor />
</Panel>
In my planning , when click the button, modal popup make the panel shown
It works. but the background, (the updatepanel part), flash base on the no of cuteeditor in the updatepanel
How can I get rid of it ?
If use AsyncPostBackTrigger, I don't know where to place and how to call it.