I have Windows Forms app NET 4.5 (VS 2013) using NLog.
I have targets:
<target name="asyncFileLog" xsi:type="AsyncWrapper">
<target name="logfileTrace" xsi:type="File" fileName="${basedir}/logs/${shortdate}Trace.log" layout="${longdate} ${message}" lineEnding="Default"/>
</target>
<target name="asyncFileError" xsi:type="AsyncWrapper">
<target name="logfileError" xsi:type="File" fileName="${basedir}/logs/${shortdate}Error.log" layout="${longdate} ${message} ${exception:format=tostring}" lineEnding="Default"/>
</target>
LogManager.Configuration.AllTargets.ToList();
returns 4 items, not 2 items.
I want change the path ${basedir}/logs in runtime, programmatically
I try this:
var rutaLogs = ConfigurationManager.AppSettings["RutaLog"];
if (!Directory.Exists(rutaLogs)) return;
var list = LogManager.Configuration.AllTargets.ToList();
foreach (var target in list)
{
FileTarget fileTarget = null;
var wrapperTarget = target as WrapperTargetBase;
// Unwrap the target if necessary.
if (wrapperTarget == null)
{
fileTarget = target as FileTarget;
}
else
{
fileTarget = wrapperTarget.WrappedTarget as FileTarget;
continue;
}
var value = fileTarget.FileName.ToString();
value = value.Replace("${basedir}/logs/", rutaLogs);
fileTarget.FileName = value;
}
Not generates anything. I try using LogManager.ReconfigExistingLoggers();
too, but not working.
Any suggestions?
It's easier to use variables in this case. ( ${var:...}
)
For this example:
<variable name="basedir" value="${basedir}" /> <!-- default, optional -->
<targets>
<target name="asyncFileLog" xsi:type="AsyncWrapper">
<target name="logfileTrace" xsi:type="File"
fileName="${var:basedir}/logs/${shortdate}Trace.log"
layout="${longdate} ${message}" lineEnding="Default"/>
</target>
...
Changing the variable in C#
// create or edit
LogManager.Configuration.Variables["basedir"] = "d:/mybasedir";
No need for LogManager.ReconfigExistingLoggers();
or looping over all the targets!
See also the ${var}
documentation
Update : in this case your are reading from .config files, this could be done with only NLog configuration (no C# needed!)
Install NLog.Extended and use ${appsetting:name=..}
eg
fileName="${var:basedir}/logs/${appsetting:name=RutaLog}Trace.log"
See also the ${appsetting}
documentation
Modify Nlog.Config like below:
<variable name="basedir" value="${basedir}" />
<targets async="true">
<target name="fileAsync" xsi:type="File" keepFileOpen="true" encoding="iso-8859-2" concurrentWrites="false"
layout="${date:format=yyyy-MM-dd, HH\:mm\:ss.fff} | [${threadid}] | ${level:uppercase=true}	| ${message}."
fileName="${var:basedir}/Log/log_${date:format=yyyy-MM-dd}.log"
archiveFileName="${var:basedir}/Log/archive/${date:format=yyyy}/${date:format=MM}/${date:format=dd}/log_${date:format=yyyy-MM-dd_hh}.log"
archiveEvery="Day" maxArchiveFiles="2048" enableFileDelete="true" archiveAboveSize="53248000" />
</targets>
Code behind: string str = LogManager.Configuration.Variables["basedir"].Text; LogManager.Configuration.Variables["basedir"] = @"D:\\LogDir";
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.