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I am currently working on a ASP.NET AJAX application. Having decided to not use UpdatePanels for evident reasons, what alternatives to I have? This application has pages built dynamically and so most or all the components of the page exist as User Controls.
I need to make AJAX calls from ASCX user control page. And as ASCX user controls may not contain Page Methods, what other options do I have?
Or, is there a way to get around using Page Methods in ASCX page?
Best way (that I discovered) is to
1. Place your PageMethods on the parent page
2. When the PageMethod completes, let your user control know via a JS method that it can the PageMethod call has been completed
3. Then a ICallbackHandler can be implemented on the user control to do a AJAX callback on the user control’s method
In my case, I need to update some values on the user control after the PageMethods gets executed, so I build my user control using HtmlOutputWriter to update the contents.
Works for me!