How To Get Timezone Before Postback

Jul 7, 2010

I am making a page that accepts post data from any number of pages that I cannot change, access, or in any way control.

I need, in one way or another, to get the timezone of the user. I know, ideally the posting page would do this, but I cannot access these pages.

First, there is javascript. I can get the javascript function to return (or change a label to) the correct value, but the problem is I need this info before the postback. I've been trying to write the timezone name on another page and read that page, but I have no idea how to begin to do that? Any other workaround to use the javascript is welcome, or any way to force call this before Page_Load is called?

[code]...

Basically, this works in debug mode, but when it's live only an empty string is returned. I am baffled? Is there any better way to read data from a page? I am using Request.ServerVariables["REMOTE_ADDR"] to get the ip, and that seems to be correct, since it inserts the correct ip into the database I'm using.

Here is the call:

GetTimezone(Request.ServerVariables["REMOTE_ADDR"]);

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