<!--日志配置可不配置，未配置时此为默认值-->
  <configSections>
    ... ...
    <section name="toolLog" type="System.Configuration.NameValueSectionHandler"/>
  </configSections>
  <!--LogHelper配置-->
  <toolLog>
    <!--日志记录路径：绝对地址D:\Logs\或应用程序下目录Logs/,留空为应用程序根目录下Logs文件夹-->
    <add key="LogPath" value="" />
    <!--日志内容格式：@Now-日期;@Message-消息内容-->
    <add key="LogMessage" value="【@Now】@Message" />
  </toolLog>

    for(var i = 0;i<100;i++)
    {//日志按调用写入的先后顺序有序写入
        LogHelper.Logs["Test"].WriteLine("Line:" + i.ToString() + ".");//Test/yyyyMMdd.txt

        LogHelper.Logs["Test2", "Test53"].WriteLine("Line:" + i.ToString() + ".");//Test2/Test53.txt
        LogHelper.Logs["Test2", "Test54"].WriteLine("Line:" + i.ToString() + ".");//Test2/Test54.txt

        LogHelper.Logs["Test" + DateTime.Now.ToString("yyyyMMdd"), "Test53"].WriteLine("Line:" + i.ToString() + ".");//TestyyyyMMdd/Test53.txt
        LogHelper.Logs["Test" + DateTime.Now.ToString("yyyyMMdd"), "Test54"].WriteLine("Line:" + i.ToString() + ".");//TestyyyyMMdd/Test54.txt

        LogHelper.Logs["Test3", "Test2/roomid54"].WriteLine("Line:" + i.ToString() + ".");//Test3/Test2/roomid54.txt
        LogHelper.Logs["Test4", "Test2\\roomid54"].WriteLine("Line:" + i.ToString() + ".");//Test4/Test2/roomid54.txt
    }

  <configSections>
    ... ...
    <section name="toolDebug" type="System.Configuration.NameValueSectionHandler"/>
  </configSections>
  <!--DebugHelper配置-->
  <toolDebug>
    <!--是否输出调试信息-->
    <add key="IsDebug" value="true"/>
    <!--调试信息内容格式：@Now-日期;@CodeLocal-出错位置;@Message-消息内容-->
    <add key="DebugMessage" value="【@Now】【@CodeLocal】@Message"/>
  </toolDebug>

    var cf = ConfigHelper.GetCustomNodeSetting("toolDebug");
    var isDebug = cf["IsDebug"];
    var isDebug2 = cf["tIsDebug"];//tIsDebug不存在：值为null
    var cf2 = ConfigHelper.GetCustomNodeSetting("toolDebug");//thuanrongDebug不存在：值为CustomNodeSection，只是其中kv.Count==0
    var tDebug = cf2["tDebug"];//tDebug不存在：值为null