Multiple controls with the same ID

[cossiboon]

Hello,
On a web form, I dynamically create some panels at run-time which all have unique ids. The first time the page is loaded, it works great. If I refresh or navigate out and come back I get the following error.

Multiple controls with the same ID 'pnlQuestionHeader12968' were found. FindControl requires that controls have unique IDs.

After doing a little bit of toying around, I noticed that if every panel added to the web form has a unique id everytime it's refreshed, the panels are added ... again. Meaning, two of the same panels on the web form.

Anybody?

josh

 

[checkai]

do you have the dynamic code in the code-behind or the html...if the code-behind make sure you have it within a

if not page.ispostback then
dynamic loading..
end if

 

[cossiboon]

Hello,
Thanks for the prompt response. I understand your idea here, although I'm not posting to the server, only refreshing (F5).

josh

 

[DaZZleD]

you should specifically set the controls ID when you create them dinamically because each time they are created, they get a new ID.