寫第一個日誌
安裝 NLog.Config 包。 (NuGet 3 使用者應該安裝 NLog 並手動新增配置。)寫入記錄器:
using NLog;
public class MyClass
{
private static Logger logger = LogManager.GetCurrentClassLogger();
public void MyMethod1()
{
logger.Trace("Sample trace message");
logger.Debug("Sample debug message");
logger.Info("Sample informational message");
logger.Warn("Sample warning message");
logger.Error("Sample error message");
logger.Fatal("Sample fatal error message");
// alternatively you can call the Log() method
// and pass log level as the parameter.
logger.Log(LogLevel.Info, "Sample informational message");
try
{
SendMail();
}
catch(Exception ex)
{
//example writing exception
logger.Error(ex, "Error when sending mail");
}
}
}
應該使用 NLog.Config 包新增此示例配置。否則將以下內容新增到應用程式的根目錄中 - 或者在 .dll 旁邊新增為“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="c:\temp\nlog-internal.log">
<!-- optional, add some variables
https://github.com/nlog/NLog/wiki/Configuration-file#variables
-->
<variable name="myvar" value="myvalue"/>
<!--
See https://github.com/nlog/nlog/wiki/Configuration-file
for information 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} ${exception}" />
</targets>
<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" />
</rules>
</nlog>
配置將日誌訊息寫入檔案。