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.


 

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.

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

 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.