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I am running an ajax update panel in my website. The update panel returns some new controls. I would like to set some JavaScript for the controls after they are returned from the ajax call. Is there any way of doing this? Thanks for any help!

Daniel B
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user516883
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2 Answers2

36

tie into the MSAjax Event

function pageLoad(){ }

this will fire every time the update panel refreshes.. you can do your rebinding / new bindings there

...and yes, that's all you need to do, put that on the page and it will fire.

Update:: [looks like i had the function named incorrectly ( i think it would still work tho) ] it's really that simple if you have a script manager on the page..

<script> 
   ///<summary>
   ///  This will fire on initial page load, 
   ///  and all subsequent partial page updates made 
   ///  by any update panel on the page
   ///</summary>
   function pageLoad(){ alert('page loaded!') }  
</script>

http://www.asp.net/ajax/documentation/live/overview/AJAXClientEvents.aspx

Archived:

https://web.archive.org/web/20160802132945/http://ajax.asp.net/ajax/documentation/live/overview/AJAXClientEvents.aspx

hanzolo
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  • can you post an example. how do I tie something to the MS ajax event? – user516883 Jan 26 '12 at 23:03
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    Ah, this is MONEY! I haven't worked with webforms in a few years (but have again, just recently). I've remember trying to do this for years. Is this a new feature they added recently or was it just not widely published? – Mike Devenney Jul 16 '15 at 17:13
  • The documentation appears to be gone – Cloud Jan 31 '20 at 04:59
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    @Cloud, added web archive link. – hanzolo Feb 04 '20 at 19:13
  • @hanzolo - this works only when we add it directly into the aspx. But do not work if we use an external .js file. any idea why it is behaving like that ? – Ananth Jan 21 '21 at 14:36
  • could be an load order issue? Make sure it's being loaded after the "client script manager" loads? and wow, almost 10 years past!!?? – hanzolo Jan 29 '21 at 22:42
-7

You could use a Timer with a function that checks if the controls exists every few hundred ms. Once it detects them, apply your script and end the timer.

Erix
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