Programmatically set Alternate languages

I’m using variations again. But this time the backend has to be multilingual too.
So I have to set up the alternate languages.

Since I want to help my users when they set up a new site, I’m using the code below in combination with a WebProvisioned event receiver.

        /// <summary>

        /// Activates all language packs that are installed on SP2010

        /// </summary>

        /// <param name="properties"></param>

        private void SetAlternateLanguages(SPWebEventProperties properties)

        {

            try

            {

                SPWeb web = properties.Web;

                SPWebTemplateCollection templates = properties.Web.Site.GetWebTemplates(web.Language);

                SPWebTemplate template = templates[web.WebTemplate];

                if (template.SupportsMultilingualUI)

                {

                    web.IsMultilingual = true;

                    SPLanguageCollection installed = SPRegionalSettings.GlobalInstalledLanguages;

                    IEnumerable<CultureInfo> supported = web.SupportedUICultures;

                    foreach (SPLanguage language in installed)

                    {

                        CultureInfo culture = new CultureInfo(language.LCID);

                        if (!supported.Contains(culture))

                        {

                            web.AddSupportedUICulture(culture);

                        }

                    }

                    web.OverwriteTranslationsOnChange = true;

                    web.Update();

                }

            }

            catch (Exception ex)

            {

                //Log the error

            }

        }

Of course has MSD more information about this subject.