Thursday 12 February 2009

this._postBackSettings.async is null or not an object

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You are using a PopupControlExtender from the AjaxControlToolkit and you added a Button or an ImageButton in it and every time you click on it this ugly js error appears: this._postBackSettings.async is null or not an object. You Google and you see that the solution is to use a LinkButton instead of a Button or an ImageButton.

Well, I want my ImageButton! Therefore I added to the Page_Load method of my page or control this little piece of code to fix the bug:
private void FixPopupFormSubmit()
{
var script =
@"if (window.Sys&&Sys.WebForms&&Sys.WebForms.PageRequestManager&&Sys.WebForms.PageRequestManager.getInstance) {
var prm=Sys.WebForms.PageRequestManager.getInstance();
if (prm&&!prm._postBackSettings) prm._postBackSettings=prm._createPostBackSettings(false, null, null);
}";
ScriptManager.RegisterOnSubmitStatement(Page, Page.GetType(), "FixPopupFormSubmit", script);
}


Hope it helps you all.

11 comments:

  1. Anonymous3 May 2009 at 02:33

    Thanks a ton!

    ReplyDelete
  2. Chris23 June 2009 at 00:36

    Thanks mate! Your post just saved me from going insane!

    ReplyDelete
  3. Anonymous16 September 2009 at 07:29

    I guess it is better than nothing, but I get really agitated when I inherit code from someone and it has voodoo it like this.

    ReplyDelete
  4. Anonymous15 March 2010 at 10:03

    thanks, it just gets fixed

    ReplyDelete
  5. Rolf7 December 2010 at 01:35

    This solved my problem. All the other "solutions" are like scrounging around in the dark.

    ReplyDelete
  6. Anonymous3 August 2011 at 12:07

    Loved it. Great !! boss.

    ReplyDelete
  7. zabanet2 September 2011 at 11:10

    Brilliant! Saved me lots of time I guess ;)

    ReplyDelete
  8. Sanjay Ror4 November 2011 at 04:04

    Thanks a lot !
    You are a life Saver Man..........

    ReplyDelete
  9. Anonymous1 May 2012 at 09:19

    Yes, this was a massive help. Thank you!

    ReplyDelete
  10. Unknown8 June 2012 at 23:25

    Thanks a lot dear !
    It's really helpful...

    ReplyDelete
  11. Anonymous18 May 2013 at 02:02

    Thanks a lot It worked .....

    ReplyDelete