Imran S. Imran S. - 3 months ago 33
C# Question

How to log to multiple targets using NLog?

I am using NLog and I want to log to RichTextBox and File at the same time. And I want to configure the Logger programmatically, not with xml config file.

The following code only logs to the last target (File in this case). Can anybody help?

RichTextBoxTarget t1 = new RichTextBoxTarget();
t1.Layout = "${date} ${message}";
t1.ControlName = "rtb_log";
t1.FormName = "MainForm";
NLog.Config.SimpleConfigurator.ConfigureForTargetLogging(t1, LogLevel.Debug);

FileTarget t2 = new FileTarget();
t2.Layout = "${date} ${level} ${message}";
t2.FileName = "${basedir}/Logs/today.log";
t2.KeepFileOpen = false;
t2.Encoding = "iso-8859-2";
NLog.Config.SimpleConfigurator.ConfigureForTargetLogging(t2, LogLevel.Trace);

Logger logger = LogManager.GetLogger("MyLogger");

Answer

Okay I got it. I should've read the help file more before posting the question. But anyways, the answer is to use SplitTarget as follows...

RichTextBoxTarget t1 = new RichTextBoxTarget();
t1.Layout = "${date} ${message}";
t1.ControlName = "rtb_log";
t1.FormName = "MainForm";

FileTarget t2 = new FileTarget(); 
t2.Layout = "${date} ${level} ${message}"; 
t2.FileName = "${basedir}/Logs/today.log"; 
t2.KeepFileOpen = false; 
t2.Encoding = "iso-8859-2"; 

SplitTarget target = new SplitTarget(); 
target.Targets.Add(t1); 
target.Targets.Add(t2); 

NLog.Config.SimpleConfigurator.ConfigureForTargetLogging(target, LogLevel.Debug);
Logger logger = LogManager.GetLogger("MyLogger");