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" autoReload="true">      

  <!--[變數] 文字樣板 -->
  <variable name="Layout" value="${longdate} | ${level:uppercase=true} | ${logger} | ${message} ${newline}"/>
  <variable name="LayoutFatal" value="${longdate} | ${level:uppercase=true} | ${logger} | ${message} | ${exception:format=tostring} ${newline}"/>

  <!--[變數] 檔案位置 -->
  <variable name="LogTxtDir" value="${basedir}/App_Data/Logs/${shortdate}/"/>
  <variable name="LogTxtLocation" value="${LogTxtDir}/${logger}.log"/>
  <variable name="LogTxtLocationFatal" value="${LogTxtDir}/FatalFile.log"/>

  <!--[設定] 寫入目標-->
  <targets>
    <target name="File" xsi:type="File" fileName="${LogTxtLocation}" layout="${Layout}"
            encoding="utf-8" maxArchiveFiles="30" archiveNumbering="Sequence"
            archiveAboveSize="1048576" archiveFileName="${LogTxtDir}/${logger}.log{#######}" />
    <target name="FileFatal" xsi:type="File" fileName="${LogTxtLocationFatal}" layout="${LayoutFatal}"
            encoding="utf-8" maxArchiveFiles="30" archiveNumbering="Sequence"
            archiveAboveSize="1048576" archiveFileName="${LogTxtDir}/FatalFile.log{#######}" />
    <target name="EventLog" xsi:type="EventLog" source="NLogLogger" log="Application"
            layout="${date}| ${level} | ${message}"/>
  </targets>

  <!--[設定] 紀錄規則-->
  <rules>
    <logger name="*" levels="Trace,Debug,Info,Warn" writeTo="File" />
    <logger name="*" levels="Error,Fatal" writeTo="FileFatal" />
    <logger name="*" levels="Fatal" writeTo="EventLog" />
  </rules>

</nlog>