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Asked: 2026-05-11T02:31:35+00:00

I’m debugging someone else’s code for a web page that is made with ASP.NET

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I’m debugging someone else’s code for a web page that is made with ASP.NET with some javascript effects. It’s a form that we are pre-populating with edit-able data, and one of the text boxes is getting populated with an incorrect value.

I know that the text box is getting filled with the correct value in the code behind, but somewhere between there and the browser it gets overwritten.

In trying to find out where that happened, I came across an interesting situation. If I right-click near the offending element and select ‘view page source,’ I can scroll down to the element and see

<input name='RecurrenceProperties$TextBox57' type='text' value='HEY ITS THE RIGHT VALUE' id='RecurrenceProperties_TextBox57' />

But the wrong value is in both the rendered html and the IE developer toolbar.

This seems like a hell of a clue, but I don’t know enough about how ‘View Source’ works to tell what is going on behind the curtain. What happens between the generation of the ‘View Source’ source and the page actually rendering?

EDIT: I found where it was going wrong by putting a break-point on everywhere that ID occurs in javascript (not exactly elegant, but I found it).

Suggestions to disable javascript and use IE8 were very helpful. thanks.

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1 Answer

  1. If you want to see what effect the javascript is having on your page, use IE8 or FireFox/Firebug on the page to see what it is(not) doing.

    They will also give you information on the Css Style, if the case is actually that the wrong element is displayed, and the right one is hidden.

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