Using ajax instead of postback

Question

User1980140492 posted

Guys,

I've successfully implemented a custom and pretty advanced cascading filtering based on Stephen's post:
http://csharpbits.notaclue.net/2009/05/communicating-between-fieldtemplates-in.html

It's a nice solution, but it would be even nicer without all the postbacks.

As I'm writing this you should know that my ajax knowledge is 0.0000% ... but to keep it simple just think of one checkbox which causes one other field to get filtered values, just like Stephen's sample. What would it take to replace the autopostbacks by some kind of Ajax code ?

Thanks in advance,
- Yannick

 

Answer 1

User-610330605 posted

You can start by adding a reference to AjaxControlToolKit.

Add a ScriptManager to the page above any AJAX dependent control.

Add an UpdatePanel in the page which encloses the Controls for partial postback.

Check out this simple Hello World example. http://ajax.net-tutorials.com/basics/hello-world/

Answer 2

User-330204900 posted

Hi Yannick, as the controls need to talk to each other they need to post back, have you tries tungin on partial render in Site.master?

<%-- TODO: Enable partial rendering by setting the EnablePartialRendering attribute to "true" to provide a smoother browsing experience.
     Leaving partial rendering disabled will provide a better debugging experience while the application is in development. --%>
<asp:ScriptManager ID="ScriptManager1" runat="server" EnablePartialRendering="false" />

Answer 3

User1980140492 posted

That does the trick :) awesome!

Cheers,
- Yannick