如何更改DBML (facebook)首选语言

我想覆盖FB首选语言;例如:

public static string ScriptUrl
{
    get
    {
        string name = System.Threading.Thread.CurrentThread.CurrentCulture.Name;
            switch (System.Threading.Thread.CurrentThread.CurrentCulture.TwoLetterISOLanguageName)
            {
                case "en":
                    //
                    //  Facebook has no en-CA script so we use en-US
                    //
                    name = "en_US";
                    break;
                //case "fr":
                //    name = "fr_CA";
                //    break;
                default:
                    name = name.Replace("-", "_");
                    break;
            }
            return "connect.facebook.net/" + name + "/all.js#xfbml=1";
        }
    }

我该怎么做?