Pass a variable from ASP.NET to HTML via Iframe?

Question

I don't know if this is even possible, but here goes: I have an ASP.NET page that contains an IFrame that calls an HTML page. Is it possible to pass a variable from the ASP.NET page to the HTML within the IFrame? More specifically, I'd like for the ASP.NET page to fill in one of the fields on the form within the HTML page.

Can the form field be filled in by a query string value? If not, you may be out of luck. — David
– David, Commented Aug 23, 2010 at 17:31
Remember that the iframe has to be on the same domain (subdomain) in order for cross frame communications to work. — Mikael Svenson
– Mikael Svenson, Commented Aug 23, 2010 at 17:39
No, it must be in the form. Its for a PP form and the whole this is sent as a post request — Unknown Coder
– Unknown Coder, Commented Aug 23, 2010 at 17:46

Jemes · Accepted Answer · 2010-08-23 17:34:54Z

1

You could do something like this:

window.frames['IFrameName'].document.getElementById('TextBoxID').value='YourValue';

answered Aug 23, 2010 at 17:34

Jemes

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2 Comments

Unknown Coder Over a year ago

I'm assuming this is javascript?

Jemes Over a year ago

Yes, sorry. Basically, it's javascript to find the textbox element in the IFrame and set it's value. You may need to add some logic to make sure the IFrame's page is loaded, but other than that, this should work.

DancesWithBamboo · Accepted Answer · 2010-08-24 05:10:07Z

0

If you only need it to work with the latest browsers then window.postMessage is the way to go to communicate between frames.

See: http://msdn.microsoft.com/en-us/library/cc197015

answered Aug 24, 2010 at 5:10

DancesWithBamboo

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1 Comment

Unknown Coder Over a year ago

Nice suggetion but I'm not ready to make the move to HTML 5 yet

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