Using a proxy with the WebBrowser Object

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C#

VB

web_browser

proxy

I've been trying to make a proxy web browser in a c# application so far I have only managed to do this by changing the system registry to use a proxy, this is not the way I want to do it as that effects all browsers on the PC i want it to be within the application. I have tried this but it is failing to work:

string proxyip = "200.54.246.14";
int proxyport = 8080;
System.Net.WebRequest.DefaultWebProxy = new WebProxy(proxyip, proxyport);

      webBrowser1.Navigate("http://www.whatismyipaddress.com/");
      webBrowser1.Refresh();

This does not work the whatismyipaddress website will return my actual ip, it works when i use this method:

RegistryKey registry =    Registry.CurrentUser.OpenSubKey("Software\\Microsoft\\Windows\\CurrentVersion\\Internet Settings", true);
registry.SetValue("ProxyEnable", 1);
registry.SetValue("ProxyServer", proxyip + ":" + proxyport.toString());

This method changes the proxy settings for the whole pc which is not what I want to do...

Any Suggestions?

Thanks