Change Proxy Settings

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I have written a code for Changing Proxy Settings (Basically Stay Between Proxy Enable and Automatic LAN Setting)

C#

private void EnableProxy(bool p)
        {
            string k = @"Software\Microsoft\Windows\CurrentVersion\Internet Settings";
            Microsoft.Win32.RegistryKey regk = Microsoft.Win32.Registry.CurrentUser.OpenSubKey(k, true);
            if (p)
                regk.SetValue("ProxyEnable", 1, Microsoft.Win32.RegistryValueKind.DWord);
            else
                regk.SetValue("ProxyEnable", 0, Microsoft.Win32.RegistryValueKind.DWord);
            regk.Close();
        }

and for Automatic LAN setting

C#

public void IEAutoDetectProxy(bool set)
        {
            // Setting Proxy information for IE Settings.
            RegistryKey RegKey = Registry.CurrentUser.OpenSubKey(@"Software\\Microsoft\\Windows\\CurrentVersion\\Internet Settings\\Connections", true);
            byte[] defConnection = (byte[])RegKey.GetValue("DefaultConnectionSettings");
            byte[] savedLegacySetting = (byte[])RegKey.GetValue("SavedLegacySettings");
            if (set)
            {
                defConnection[8] = Convert.ToByte(9);
                savedLegacySetting[8] = Convert.ToByte(9);
            }
            else
            {
                defConnection[8] = Convert.ToByte(1);
                savedLegacySetting[8] = Convert.ToByte(1);
            }
            RegKey.SetValue("DefaultConnectionSettings", defConnection);
            RegKey.SetValue("SavedLegacySettings", savedLegacySetting);
        }

It works but I still have to apply it manually. It changes the setting but I have to go to Internet Settings and say "OK" and "Apply", Please help

Posted 1-Oct-15 5:15am

KumarAbhishekJaiswal

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**Zoltán Zörgő** · Accepted Answer · 2015-10-01T06:12:00

In general, when you change system wide settings, you should notify the applications about this. In general, you can do this by broadcasting special kind of messages. All that are interested in that message, will be able to react - of course, if an application does not intercept this message, the notification won't reach it. In some cases there are special techniques to notify specific applications. In your case, you need to notify the system and Internet explorer as well.

You should consult this article: Change Internet Explorer 7 Proxy Setting without Restarting Internet Explorer[^]