c# - Change Internet Explorer settings programmatically?

Question

Any idea how do I do the following using C#?

1. Going to Tools -> Internet Options -> Security
2. Select the Security tab
3. Click the Custom Level button
4. In the Miscellaneous section change Display mixed content to Enable

Answer 1

The "cheat" way to do this is to change the value

HKEY_CURRENT_USERSoftwareMicrosoftWindowsCurrentVersionInternet Settingsones1609 HKEY_CURRENT_USERSoftwareMicrosoftWindowsCurrentVersionInternet Settingsones11609 HKEY_CURRENT_USERSoftwareMicrosoftWindowsCurrentVersionInternet Settingsones21609 HKEY_CURRENT_USERSoftwareMicrosoftWindowsCurrentVersionInternet Settingsones31609 HKEY_CURRENT_USERSoftwareMicrosoftWindowsCurrentVersionInternet Settingsones41609

Where 0-4 are Zone identifiers and the value is 0 to Allow, 1 to Prompt, and 3 to Block. Keep in mind that if your code does this on anyone's machine but your own, you're likely to find your code blocked as malware.

The "proper" way to do this is to use the APIs to create an IInternetZoneManager and call SetZoneActionPolicy to adjust the settings for URLACTION_HTML_MIXED_CONTENT in the zones you want to adjust.