According to my research whilst trying to solve this problem, it turns out that the .Net WebProxy class does not support Socks proxies - a tad annoying. I also can't seem to find any code or information which explains how to implement Socks 4/5 support via a class which can easily be used with HttpWebRequest (the Proxy property, to be exact).
I've found limited information via google on how I could do this. One suggestion involves changing internet explorer proxy settings - something I'd rather not do.
Does anyone know of anything which could do the job or have any suggestions? Any help would be much appreciated.
I tried numerous .Net libraries which claimed to support Socks4/5 but found many of them just did not work or would error trying to connect to proxies I knew were functioning.
I've ended up using Chilkat Software's Sock/SSL component which seems to work well for me even if I do have to manually construct the HTTP requests instead of using HttpWebRequest as I would have liked.
Chilkat.Http.SocksHostname, Chilkat.Http.SocksPort and Chilkat.Http.SocksVersion properties.