downloading pages with problematic security certificates

When I go to a website manually it says there is a problem with its security certificate.
I can press continue and then carry on to the site.

I'm trying to download data from this website.  How can my program do the equivalent of pressing continue?
It has an https rather than an http prefix.
I'm using C# windows forms with .net framework 3.5.
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It happened because that site's ssl certificate is not secure (They generate it themselves, for example).
That error message is browser's feature, I don't think you will have any problem when access it with your code.
AlHal2Author Commented:
The program is  failing in the beginning.


I get error saying navigation to the page is cancelled.

And the response will have html of error page.
Well, I believe webbrowser use IE component inside. Try change to httpwebrequest instead.

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