C# 如何在运行时更改NLog布局?
我创建了NLog.config:C# 如何在运行时更改NLog布局?,c#,logging,nlog,C#,Logging,Nlog,我创建了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" throwExceptions="false" throwConfigExceptions="true"&
<?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"
throwExceptions="false"
throwConfigExceptions="true"> <!--make NLog complain, when something is wrong with the configuration-->
<targets>
<target name="logfile" xsi:type="File"
fileName="${basedir}/Logs/Log_${shortdate}.txt"
layout="[${longdate}] [${uppercase:${level}}] ${message} ${exception:format=tostring}"
/>
<target name="logconsole" xsi:type="ColoredConsole"
layout="[${longdate}] ${uppercase:${level}}: ${message} ${exception:format=tostring}"
/>
</targets>
<rules>
<logger name="*" minlevel="Info" writeTo="logconsole" />
<logger name="*" minlevel="Debug" writeTo="logfile" />
</rules>
</nlog>
这很好。
现在在某些情况下我不想显示日期时间部分,我只想在控制台中显示它
我将如何使用NLog实现这一点
我想要的伪解决方案是:
logger.Info("Hello World", writeTo: "logconsole", layout: "[${uppercase:${level}}] ${message}");
我尝试添加一个新的taget
<target name="logconsole_simple" xsi:type="ColoredConsole"
layout="${uppercase:${level}}: ${message} ${exception:format=tostring}"/>
但它仍然显示日期时间部分,并将其记录到文件中(我不希望这样)。
如何解决此问题?为您的特殊情况添加目标和规则,并按姓名引用记录器 配置:
用法:
internal class Program
{
private static readonly Logger DefaultLogger = LogManager.GetLogger("default");
private static readonly Logger OtherLogger = LogManager.GetLogger("other");
private static void Main(string[] args)
{
for (var i = 0; i < 2; i++)
{
if (i % 2 == 0)
{
DefaultLogger.Info("normal log message");
}
else
{
OtherLogger.Info("special case");
}
}
}
}
内部类程序
{
私有静态只读记录器DefaultLogger=LogManager.GetLogger(“默认”);
专用静态只读记录器OtherLogger=LogManager.GetLogger(“其他”);
私有静态void Main(字符串[]args)
{
对于(变量i=0;i<2;i++)
{
如果(i%2==0)
{
DefaultLogger.Info(“正常日志消息”);
}
其他的
{
OtherLogger.Info(“特殊情况”);
}
}
}
}
编辑:如果您真的想通过修改现有目标和规则在代码中完成这项工作,您可以(这将使用原始帖子中的配置):
使用System.Linq;
使用NLog;
使用NLog.布局;
使用非直瞄目标;
内部课程计划
{
私有静态只读记录器Logger=LogManager.GetCurrentClassLogger();
私有静态void Main(字符串[]args)
{
对于(变量i=0;i<2;i++)
{
如果(i%2==0)
{
Logger.Info(“正常日志消息”);
}
其他的
{
//重新配置
var consoleTarget=LogManager.Configuration.FindTargetByName(“logconsole”);
var oldLayout=consoleTarget.Layout;
consoleTarget.Layout=new SimpleLayout{Text=“${uppercase:${level}}:${message}${exception:format=tostring}”};
var fileRule=LogManager.Configuration.LoggingRules.Single(r=>r.Targets.Any(t=>t.Name==“logfile”);
LogManager.Configuration.LoggingRules.Remove(fileRule);
LogManager.Configuration.Reload();
Logger.Info(“特殊情况”);
//替换原件
consoleTarget.Layout=旧布局;
LogManager.Configuration.LoggingRules.Add(fileRule);
LogManager.Configuration.Reload();
}
}
}
}
您知道这是否是添加其他记录器的唯一方法吗?对于特定的案例使用,DefaultLogger
,不能在运行时更改此设置吗?
<logger name="logconsole_simple" level="Info" writeTo="logconsole_simple" />
logger.Log(LogEventInfo.Create(LogLevel.Info, "logconsole_simple", "simple message!"));
internal class Program
{
private static readonly Logger DefaultLogger = LogManager.GetLogger("default");
private static readonly Logger OtherLogger = LogManager.GetLogger("other");
private static void Main(string[] args)
{
for (var i = 0; i < 2; i++)
{
if (i % 2 == 0)
{
DefaultLogger.Info("normal log message");
}
else
{
OtherLogger.Info("special case");
}
}
}
}
using System.Linq;
using NLog;
using NLog.Layouts;
using NLog.Targets;
internal class Program
{
private static readonly Logger Logger = LogManager.GetCurrentClassLogger();
private static void Main(string[] args)
{
for (var i = 0; i < 2; i++)
{
if (i % 2 == 0)
{
Logger.Info("normal log message");
}
else
{
// reconfigure
var consoleTarget = LogManager.Configuration.FindTargetByName<ColoredConsoleTarget>("logconsole");
var oldLayout = consoleTarget.Layout;
consoleTarget.Layout = new SimpleLayout { Text = "${uppercase:${level}}: ${message} ${exception:format=tostring}" };
var fileRule = LogManager.Configuration.LoggingRules.Single(r => r.Targets.Any(t => t.Name == "logfile"));
LogManager.Configuration.LoggingRules.Remove(fileRule);
LogManager.Configuration.Reload();
Logger.Info("special case");
// replace originals
consoleTarget.Layout = oldLayout;
LogManager.Configuration.LoggingRules.Add(fileRule);
LogManager.Configuration.Reload();
}
}
}
}