NLog日志使用方法

1:首先下载Nlog.dll，通过网上直接download 或者nuget 下载dll都可以。http://nlog-project.org/download/ 然后把下载下来的Nlog.dll ,Nlog,extension.dll 加入项目reference.

2:配置WebConfig文件：

<configuration>
  <configSections>
    <section name="nlog" type="NLog.Config.ConfigSectionHandler, NLog"/>
  </configSections>

  <nlog xmlns="http://www.nlog-project.org/schemas/NLog.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
    <targets>
       <target xsi:type="File" name="f" fileName="${basedir}/APP_Data/logs/${shortdate}.log" layout="${longdate} ${uppercase:${level}} ${message}" /> 
    </targets>
    <rules>
       <logger name="*" minlevel="Trace" writeTo="f" />
    </rules>
  </nlog>

</configuration>

3：写入日志：

private static Logger logger = LogManager.GetCurrentClassLogger();

logger.Info("info 日志");
logger.Trace("Trace 日志");
logger.Error("Trace 日志");