Wednesday, March 23, 2011

How to add JavaScript function before request or after request for ACT Update Panel?

                function BeginRequestHandler(sender, args)
                     var elem = args.get_postBackElement();
                     ActivateAlertDiv('visible', 'AlertDiv', elem.value + ' processing...');
                function EndRequestHandler(sender, args)
                     ActivateAlertDiv('hidden', 'AlertDiv', '');

In ASP.NET, ENTER key on a FORM with a single Input Field, will automatically SUBMIT.

This happens in IE, Chrome, but not in Firefox.
Solution: add another hidden input field. Such as:

<div style="display: none">
    <input type="text" name="hiddenText" />

Because IE and Chrome following HTML2.0 Specification exactly.
According to HTML2.0 Specification, 8.2. Form Submission:

When there is only one single-line text input field in a form, the
   user agent should accept Enter in that field as a request to submit
   the form.