Apply changed settings in regisrty to running Internet Explorer

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C#

Hey guys,

As you probably know you can change favorite language in your browser.
In Internet Explorer: Tools -> Internet Options -> Languages
This settings saves data in
"HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\International\AcceptLanguage" in registry.

If you change key value to "en-US" then "Languages" dialog in IE will contains English language, in case if value equals to "ru-RU" the dialog shows Russian.

For example your current language is "en-US" in Internet Explorer and you have following page opened in Internet Explorer as well:

    <table cellpadding="0" cellspacing="0" class="table-main">
    <tr>
    <td align="right">Culture name:</td>
    <td><% Response.Write(System.Globalization.CultureInfo.CurrentCulture.DisplayName.ToString() + 
               "<br />LCID: " + System.Globalization.CultureInfo.CurrentCulture.LCID.ToString() +
               "<br />Name: " + System.Globalization.CultureInfo.CurrentCulture.Name); %></td>
    </tr>
</table>

The page shows you the following info:

Culture name: English (United States)
LCID: 1033
Name: en-US 

You change the registry like this:

const String LANG_KEY_NAME = @"Software\Microsoft\Internet Explorer\International";
const String AcceptLanguageKey = @"AcceptLanguage";

RegistryKey languageKey = Registry.CurrentUser.OpenSubKey(LANG_KEY_NAME, RegistryKeyPermissionCheck.ReadWriteSubTree);

languageKey.SetValue(AcceptLanguageKey, "ru-RU");

You update the opened page but result is still

Culture name: English (United States)
LCID: 1033
Name: en-US

but should be:

Russian (Russia)
LCID: 1049
Name: ru-RU

if you open the Language dialog just press "OK" and update page or open this page in new window then the page shows correct info.

I tried this [^] solution. But sending "WM_SETTINGCHANGE" window message doesn't help:

        [Flags]
        public enum SendMessageTimeoutFlags : uint
        {
            SMTO_NORMAL = 0x0,
            SMTO_BLOCK = 0x1,
            SMTO_ABORTIFHUNG = 0x2,
            SMTO_NOTIMEOUTIFNOTHUNG = 0x8,
            SMTO_ERRORONEXIT = 0x0020
        }

        [DllImport("user32.dll", SetLastError = true, CharSet = CharSet.Auto)]
        public static extern IntPtr SendMessageTimeout(
            IntPtr windowHandle,
            uint Msg,
            IntPtr wParam,
            IntPtr lParam,
            SendMessageTimeoutFlags flags,
            uint timeout,
            out IntPtr result);

private void ChangeLanguage(){
                IntPtr hwnd;
                IntPtr pResult;
                const uint WM_SETTINGCHANGE = 0x1A;
                Process[] processes = Process.GetProcessesByName("iexplore");

                for (int i = 0; i < processes.Length; i++)
                {
                    hwnd = processes[i].Handle;
                    SendMessageTimeout(hwnd, WM_SETTINGCHANGE, IntPtr.Zero, IntPtr.Zero, SendMessageTimeoutFlags.SMTO_BLOCK, 5000, out pResult);
                }
}

Could you please help me with this? restarting IE is not an option for me.

Thanks.