>>Two question:
>>First of all, I have a url with a few thousand character querystring. Is this recommended? This is a large block of text that I want to send to another form and this is the easiest was of doing it.
>>
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>The supported length of a querystring depends on the browser, it's usually around 2K.

I'm sure I'm hitting that limit, although when I copy and paste into my browser directly it works.

>>Second, I am getting a "cannot display the webpage" error when I user Response.Redirect to access this url. When I copy and paste the URL into my browser the page displays properly. When I manually change the URL to something trivial like www.google.com it works properly. Any advice?
>>
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>Are you URL encoding the string (eg. converting spaces to %20 - that kind of thing) via something like HttpUtility.UrlEncode()?

Yes, I am.