UserMessage

 public static class UserMessage
    {
        private static ResourceManager _resourceManager;

        static UserMessage()
        {
            string baseName = Assembly.GetAssembly(typeof(UserMessage)).GetName().Name + ".Messages.de";
            Console.WriteLine(baseName);
            _resourceManager = new ResourceManager(baseName, Properties.GlobalizationAssembly);
        }

        public static string GetMessage(string msgID, params string[] arguments)
        {
            string msg = "";
            string error = "[Message Error] cannot read Message " + msgID;
            try
            {
                //DefaultLanguage = 'de'
                //using the GetString overload with or without CultureInfo paramter makes no difference
                msg = _resourceManager.GetString(msgID, new CultureInfo(Properties.DefaultLanguage));

                for (int i = 0; i < arguments.Length; i++)
                {
                    msg = msg.Replace("{" + i.ToString() + "}", arguments[i]);
                }
            }
            catch (Exception ex)
            {
                Console.WriteLine(error + "\r\n" + ex.ToString());
                return error;
            }
            return msg;
        }
    }