C# NLog 配置

首先用NuGet安装NLog依赖DLL

NLog

NLog.Config

NLog.Schema

 

NLog配置文件NLog.config：

<?xml version="1.0" encoding="utf-8" ?>
<nlog xmlns="http://www.nlog-project.org/schemas/NLog.xsd"
      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
      xsi:schemaLocation="http://www.nlog-project.org/schemas/NLog.xsd NLog.xsd"
      autoReload="true"
      throwExceptions="false"
      internalLogLevel="Off"
      internalLogFile="d:\nlog\nlog-internal.log">

  <!-- optional,add some variables
  https://github.com/nlog/NLog/wiki/Configuration-file#variables
  -->
  <variable name="myvar" value="myvalue"/>-->

  variable name="logDir" value="${basedir}/nlog"/>
  ="logFileName"="${date:format=yyyyMMdd}.txt"="logArchiveFileName"="${date:format=yyyyMMdd}_{#}.txt"="logLayout"="${date:format=yyyy-MM-dd HH\:mm\:ss.fff} [${level}] ${message}"/>

  
  See https://github.com/nlog/nlog/wiki/Configuration-file
  for @R_967_4045@ion on customizing logging rules and outputs.
   targets>

    
    add your targets here
    See https://github.com/nlog/NLog/wiki/Targets for possible targets.
    See https://github.com/nlog/NLog/wiki/Layout-Renderers for the possible layout renderers.
    -->

    
    Write events to a file with the date in the filename.
    <target xsi:type="File" name="f" fileName="${basedir}/logs/${shortdate}.log"
            layout="${longdate} ${uppercase:${level}} ${message}" />
    target xsi:type="File" name="info"
            layout="${logLayout}"
            fileName="${logDir}/info/${logFileName}"
            archiveFileName="${logDir}/info/${logArchiveFileName}"
            archiveAboveSize="10485760"
            archiveNumbering="Sequence"
            maxArchiveFiles="100"
            concurrentWrites
            keepFileOpen
            openFileCacheTimeout="30"
            encoding="UTF-8" />

    ="debug"="${logDir}/debug/${logFileName}"="${logDir}/debug/${logArchiveFileName}"="error"="${logDir}/error/${logFileName}"="${logDir}/error/${logArchiveFileName}"</rules>
     add your logging rules here 
    Write all events with minimal level of Debug (So Debug,Info,Warn,Error and Fatal,but not Trace)  to "f"
    <logger name="*" minlevel="Debug" writeto="f" />
    logger ="*" minlevel="Info" maxlevel writeto="info" ="Debug"="debug" ="Error"="error" >
nlog>

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变量定义：

private Logger _log = NLog.LogManager.GetLogger("NLogTest");

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或者：

private Logger _log = NLog.LogManager.GetCurrentClassLogger();

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写日志示例：

private void button4_Click(object sender,EventArgs e)
{
    Task.Run(() =>
    {
        Log(==== 开始 ========");
        Stopwatch stopwatch = new Stopwatch();
        stopwatch.Start();
        List<Task> taskList = new List<Task>();
        Task tsk = null;
        int taskCount = 0;

        tsk = Task.Run(() =>
        {
            for (int i = 0; i < n; i++)
            {
                _log.Info(测试日志 " + i.ToString(000000));
                Interlocked.Increment(ref taskCount);
            }
        });
        taskList.Add(tsk);

        tsk = Task.Run(() =>)
            {
                _log.Debug()
            {
                _log.Error( taskCount);
            }
        });
        taskList.Add(tsk);

        Task.WaitAll(taskList.ToArray());
        Log(Task Count=" + taskCount);

        Log(==== 结束 " + ，耗时：" + stopwatch.Elapsed.TotalSeconds.ToString(0.000") +  秒 ========);
        stopwatch.Stop();
    });
}

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