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Ajax postback control pageload function

Hello

In the code attached, there is a function which disables some buttons.

What is needed is that this function not be called if the postback comes from an asp.net radiobuttonlist that is inside a listview.

Or another would be to only call this function first time the listview is loaded and not when further ajax postbacks are done after e.g. selection an item in the radiobuttonlist (which calls a SelectedIndexChanged in the code behind).

function pageLoad() {
            var manager = Sys.WebForms.PageRequestManager.getInstance();
            manager.add_endRequest(OnEndRequest);

            var elem = document.getElementById('<%= DataPagerListView.ClientID %>').getElementsByTagName("*");
            for (var i = 0; i < elem.length; i++) {

                if (!elem[1].disabled) {
                    disable();
                }

            }

        }

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Rahul Gade

You need to add a condition in the pageLoad() as

if ( ! Page.isPostBack)
{
//Put the code that you do not want to get executed for ajax postback

}

-Rahul Gade

gabi456

ASKER

Hello Rahul

Sorry, it didn't work.

I want it be when it is posted back, but not from the radiobuttonlist control.

Thanks

Rahul Gade

Ohh, sorry I didn't realized that you want to apply this restriction on client side code, page.IsPostBack is available on code behind only.
In order to have better control on what script should be executed when loading page you can use page.registerScriptBlock("AA","<script langauge=JavaScript>your script goes here</script>.

So, you can register your javascript code only when needed at runtime (page loading), instead of having this as a part of page always.

-Rahul Gade

Rahul Gade

Instead of registerScriptBlock, you can also use page.registerStartupScript function to immediatly reflect the script code.

gabi456

ASKER

Hello

This still doesn't solve the problem. Even if i register the script from the code behind it will still run when the radiobuttonlist is selected.

Need to put something in the javascript script code attached to not call the function if the postback was done from the radiobuttom list selectedindexchanged event.

Thanks.

Deja Anbu

before registering the script, you just check which control causes the postback, if the postback is raised from the radiobutton, then do not register the script.

here is a method to findout which control causes the postback

http://stackoverflow.com/questions/3175513/on-postback-how-can-i-check-which-control-cause-postback-in-page-init-event

Deja Anbu

check this link also for detecting this in javascript

http://www.aspsnippets.com/Articles/Detect-ASP.Net-Asynchronous-PostBack-using-PageRequestManager-Events-in-JavaScript.aspx

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Rahul Gade

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gabi456

ASKER

Thanks