Sure. Here's how you can create a custom dynamic field:
Put this in your application's log4net setup:
// This is a way of creating a dynamic property (found in
ActiveProperties.cs)
// To use it, put a reference to the property in the appender's
property: %property{custom1}
// It isn't actually used for anything right now, but I wanted it left
in as an example
log4net.GlobalContext.Properties["custom1"] = new Custom1();
log4net.GlobalContext.Properties["custom2"] = new Custom2();
log4net.GlobalContext.Properties["custom2"] = new Custom3();
And then add this class to your project:
// You can use this class to create an active property to be used in the
log4net configuration
//
// In your application setup routine you would create the property:
// log4net.GlobalContext.Properties["sampler"] = new
SampleProperty();
//
// Then in the log4net.xml file, a pattern might contain this reference:
%property{sampler}
//
using System;
using System.Collections.Generic;
using System.Text;
namespace Genesis.Logging {
public static class ActiveProperties {
public static string custom1 = "custom1 value";
public static string custom2 = "custom2 value";
public static string custom3 = "custom3 value";
}
public class Custom1 {
public override string ToString() {
return ActiveProperties.custom1;
}
}
public class Custom2 {
public override string ToString() {
return ActiveProperties.custom2;
}
}
public class Custom3 {
public override string ToString() {
return ActiveProperties.custom3;
}
}
}
Then, in your InfoFormat method, just set the sampleProperty to whatever
you passed in, just before you log the error.
________________________________
From: Bill McCormick [mailto:[EMAIL PROTECTED]
Sent: Thursday, October 02, 2008 9:39 AM
To: log4net-user
Subject: custom fields?
Hello,
Is it possible to add custom fields to log4net. I'd like to be able to
do something like this:
log.InfoFormat("Custom1", "Custom2", "Custom3", "{0}","Message");
and then have an appender look something like:
<layout type="log4net.Layout.
PatternLayout">
<conversionPattern value="%custom1 %custom2 %custom3 %message%newline"
/>
</layout>
Thanks,
Bill
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