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Answer 1

+1 A:

I get the same problem when I try to run it from the page_load event of the aspx page, but when I run it from the body onload event it works. I think this is happening because the page_load event occurs before your window.alert override has a chance to be run.

Try this in the body tag:

<body onload="alert('Your login attempt was not successful. Please try again.');">

And the jQuery:

$(function () {

        window.alert = function (message) {
            $('#dialog').text(message).dialog();
        }

 });

I used the jQuery UI dialog plugin by the way.

ryanulit 2010-09-10 12:57:39

Answer 2

A:

Ok, I found where is the problem. If code registered with RegisterClientScriptBlock refer to another JS code then we need to load web page in full. It seems that JS registered in RegisterClientScriptBlock executed immediate when it is loaded in browser no matter if web page loaded in full or not. So we need to execute code after web page loaded fully. We can use jQuery event below to find it

  $(document).ready(function() {



  });

The full code will look like

Page.ClientScript.RegisterClientScriptBlock(this.GetType(), "InvalidPassword",
                    "$(document).ready(function() {alert(\"Your login attempt was not successful. Please try again.\");})",
                    true);

Tomas 2010-09-10 12:58:41

@Tomas: Good solution but that behavior is not specific to RegisterClientBlockScript -- javascript is always executed as soon as the browser sees it, in fact all browsers block all further rendering and resource requesting while processing a <script>

Scott Stafford 2010-09-10 13:06:23

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