Detect proxy settings of default web browser

Question

MSDN sample

HttpWebRequest myWebRequest=(HttpWebRequest)WebRequest.Create("http://www.microsoft.com");
WebProxy myProxy=new WebProxy();
// Obtain the 'Proxy' of the  Default browser.  
myProxy=(WebProxy)myWebRequest.Proxy;

Doesn't work. The error I get is: Unable to cast object of type 'WebProxyWrapper' to type 'System.Net.WebProxy'

What options do I have?

adrianbanks · Accepted Answer · 2009-06-21 14:07:32Z

10

HttpWebRequest.Proxy returns an IWebProxy interface, not WebProxy. Change that and it will work.

You can also use WebRequest.DefaultWebProxy or WebRequest.GetSystemWebProxy() to get the proxy details instead of making an HttpWebRequest and getting the proxy from that.

answered Jun 21, 2009 at 14:07

adrianbanks

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Dmitrii Lobanov · Accepted Answer · 2012-02-04 19:23:43Z

-3

To check automatically detect setting, use code:

RegistryKey registry = Registry.CurrentUser.OpenSubKey(
    "Software\\Microsoft\\Windows\\CurrentVersion\\Internet Settings", true);
registry.SetValue("ProxyEnable", 0);
RegistryKey registry2 = Registry.CurrentUser.OpenSubKey(
    "SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Internet Settings\\Connections", true);
registry2.DeleteValue("DefaultConnectionSettings", false);
registry2.DeleteValue("SavedLegacySettings", false);

edited Feb 4, 2012 at 19:23

Dmitrii Lobanov

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answered Feb 4, 2012 at 17:40

Quang Minh

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1 Comment

psouza4 Over a year ago

This code certainly doesn't check settings, but changes and deletes them.

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