ASP.NET AJAX UI

Re: Which UpdatePanel issued an Async Postback Call?

WebPrgmer — Wed, 29 Aug 2007 04:09:44 GMT

Thanks all. I wrote a custom control deriving from UpdatePanel and using the IsInPartialRendering property in RenderChildren. I can detect which exact UpdatePanel is requesting updation like this. However when I add a usercontrol to the page at this stage, I get "Extender controls cannot be added after PreRender" exception. This happens if the user control I am loading has an ajax extender control in it.

I then used the OnLoad method of a regular UpdatePanel control..

Thanks again,

WebPrgmer.

Re: Which UpdatePanel issued an Async Postback Call?

gt1329a — Mon, 27 Aug 2007 02:54:08 GMT

An easier way might be to appropriately handle the Load event of each UpdatePanel, instead of putting it all in Page_Load.

Re: Which UpdatePanel issued an Async Postback Call?

jocc — Mon, 27 Aug 2007 01:29:47 GMT

You can check each UpdatePanel to see IsInPartialRendering property is true or not.

Please refer to http://msdn2.microsoft.com/en-us/library/system.web.ui.updatepanel.isinpartialrendering(VS.90).aspx for detials.

Which UpdatePanel issued an Async Postback Call?

WebPrgmer — Sun, 26 Aug 2007 22:59:26 GMT

Hi All,

I have an aspx page where I have 5 UpdatePanels in which I am loading 5 different user controls dynamically. Each UpdatePanel has a different trigger and UpdateMode set to Conditional. When a user clicks on a Button inside of the 1st UpdatePanel, I know I will need to load the contents again in Page_Load. However, how do I know which UpdatePanel the request came from? If the Button clicked was inside UpdatePanel3, I want to LoadControl again inside UpdatePanel3 only and not inside all other UpdatePanels on the page.

Is there any way to find out which particular UpdatePanel is updating?

TIA,

WebPrgmer.