Access Memory Target in NLog

问题

Lets say I have the following in my nlog.config (taken from http://nlog-project.org/documentation/v2.0.1/html/T_NLog_Targets_MemoryTarget.htm):

<nlog xmlns="http://www.nlog-project.org/schemas/NLog.xsd"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
     <targets>
         <target name="memory" xsi:type="Memory" layout="${message}" />
     </targets>

     <rules>
         <logger name="*" minlevel="Info" writeTo="memory" />
    </rules>
</nlog>

How do I access this target programatically? I am trying to display the logs in a text box.

回答1:

Exactly the same issue here, this worked for me:

var target =(MemoryTarget)LogManager.Configuration.FindTargetByName("memory");
var log = string.Join("\r\n", target.Logs);
txtLog.Text = log;

回答2:

You can use LoggingConfiguration.FindTargetByName passing in the name of the target, then cast it to MemoryTarget, and use the Log property to get the logs gathered

回答3:

Check here NLog manual http://nlog-project.org/documentation/v2.0.1/html/T_NLog_Targets_MemoryTarget.htm

 using System;

 using NLog;
 using NLog.Targets;

 class Example
 {
     static void Main(string[] args)
     {
        MemoryTarget target = new MemoryTarget();
        target.Layout = "${message}";
        //  target.Layout = "${longdate} ${level:uppercase=true} ${logger} ${message}";
        NLog.Config.SimpleConfigurator.ConfigureForTargetLogging(target, LogLevel.Debug);

        Logger logger = LogManager.GetLogger("Example");
        logger.Debug("log message");

        foreach (string s in target.Logs)
        {
            Console.Write("logged: {0}", s);
        }
    }
}

回答4:

You can create your own target and process log entries as need: https://github.com/nlog/NLog/wiki/How-to-write-a-Target

来源：https://stackoverflow.com/questions/23834330/access-memory-target-in-nlog

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nlog