测试时才调用的方法

        private bool UseTest()
        {
            if (ConfigurationManager.AppSettings.AllKeys.Contains("usestructureTest") == false)
                return false;
            if (Convert.ToInt32(ConfigurationManager.AppSettings["usestructureTest"]) <= 0)
                return false;
            return true;
        }

  <appSettings >
    <add key="usestructureTest" value="1"/>
  </appSettings>