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C# - How To Use AutoPostBack Inside UpdatePanel


I have two DropDownLists inside an UpdatePanel.

The values shown inside the second are dependent of the selectedValue on the first, so, I need AutoPostBack=true.

But, whenever the selected value in the first DropDownList is changed causes the UpdatePanel reload.

How can this be solved?

PS.: The UpdatePanel's UpdateMode property is set to Conditional.


View 1 Replies (Posted: Sep 24 10 at 1:31)

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TThis time I'm facing some unusual behavior with a web page that I'm developing. I have a table with several controls and gridviews and stuff. At some point of the table, i have to show some rows (they were hidden) when the users clicks a button. I was doing this with a PlaceHolder, but now i have to do it without the postback being displayed. I thought: "That should be easy, all i have to do is to put the PlaceHolder inside an UpdatePanel, and that's it" but no, no no nooo!! NOTHING IS THAT EASY!!! It actually works but it puts the hidden rows at the top of the page, not where they suppose to go!!My code is the following:

<asp:UpdatePanel runat="server" ID="uplAutoridadesAmbientales">

Posted: Nov 08, 2010 09:51 PM

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AJAX :: Updatepanel Inside A FancyBox?
I have an issue with my wizard-form. Once a postback occurs inside an updatepanel (aka I click a button for the next page, which hides current panel and shows next), it doesn't work anymore.

It does work if I access my form directly (http://hostese.ide3.hr/Prijava.aspx), but it doesn't work if I go through Fancybox (http://hostese.ide3.hr/HostesePromotori.aspx, and then click "Prijavnica" black button).

ATM I am using ImageButton, but same thing happens with regular button as well.

Code is simple, OnClick event calls a method which hides all panels, except the one that is next to show. All 4 panels (3 for form and 1 for thank you message) are inside an updatepanel content template.

Posted: Nov 21, 2009 03:23 PM

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AJAX :: Use An UpdatePanel Inside An AnimationExtender?
I have an animationExtender, I have an update panel iniside of it with the updatemode Conditional and I have the button that triggers it, but whenever I click that button, the whole page reloads and the animationExtender closes. Why would it do that?

Posted: Apr 19, 2010 07:39 PM

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