Calling function on Codebehind from client side scripting using ASP.NET AJAX

Hi,

I'm relatively new to the new avtar of AJAX. I've used the Ajax.dll in my previous application to make an AJAX call.

Now my issue is. How do i call a function on my code behind page , from my client side javascript. To elaborate this consider the following.

I'm creating a new ASP.NET AJAX Web Site.

I've Defaul.aspx with following controls.

1. a button.

2.a dropdown.

In my Default.vb page i've a function FillComboValues() that returns a string.

No on clicking Button i wanna run the FillComboValues() function on my code behind.( I DONT WANT TO USE UPDATEPANEL.)

I've read many articles on net to solvemy problem but every example describes how to access a webservice method. none of them have described how to access a pagemethod.

Pls help me out with this ...

Thanks in advance.

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In previous version of ajax , we needed to register the server side function using <Ajax.AjaxMethod()> _ . isn't there an equivalent way of registering the function.?

Hi,

Same problem for me, plz let me know whether you have found a solution for this or not?

Thanks

Hi, you can only call static functions of codebehind from javascript normally. Create a static function in codebehind and in javascript just call it in the following way:

say your static method is returning some string value, then in javascript you have to write,

var returnedValue = <% ="'" + ReturnHello() + "'" %>

In order to call a function on codebehind you can use either a WebService or an static method. I had the same problem and i used static methods because it′s more like Ajax.AjaxMethod, The first thing to do is to add to the scripmanager the following line EnablePageMethods="true" and then in code behing put [WebMethod] in front of every method you want to use. To call them from your client script, just use PageMethods.[your method name] and you should be good to go....

i am speaking about the code behind file of aspx page (not asmx-webservice). You can not use [WebMethod] in codebehind file.

In previous version of ajax , we needed to register the server side function using[Ajax.AjaxMethod()] {in codebehind} . isn't there an equivalent way of registering the function.?

Pleaes let me know if you have any thing equivalent to this?

SaiTej:

i am speaking about the code behind file of aspx page (not asmx-webservice). You can not use [WebMethod] in codebehind file.

In previous version of ajax , we needed to register the server side function using[Ajax.AjaxMethod()] {in codebehind} . isn't there an equivalent way of registering the function.?

Please let me know if you have any thing equivalent to this?

Alternate method inAjax Extensions is putting the control (for ex:button) in Update panel. All the events that u write for this control are async.

So no need to declare explicitly[Ajax.AjaxMethod()]

asj:

Equivalent way inAjax Extensions is putting the control (for ex:button) in Update panel. All the events that u write for this control are async.

So no need to declare explicitly[Ajax.AjaxMethod()]