AspNetTrace target
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Writes log messages to the ASP.NET trace.
Supported in
Configuration Syntax
Read more about using the Configuration File.Parameters
- General Options
- name - Name of the target.
- Layout Options
- layout - Layout used to format log messages.Layout Required. Default: ${longdate}|${level:uppercase=true}|${logger}|${message}
Remarks
Log entries can then be viewed by navigating to http://server/path/Trace.axd.
Examples
In order to use this target, put the following code in the configuration file such as Web.nlog or NLog.config:
<?xml version="1.0" ?> <nlog xmlns="http://www.nlog-project.org/schemas/NLog.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"> <targets> <target name="aspnet" xsi:type="ASPNetTrace" layout="${logger} ${message}" /> </targets> <rules> <logger name="*" minlevel="Debug" writeTo="aspnet" /> </rules> </nlog>
You can also configure the target programmatically, by putting the code in Application_Start event handler or similar:
using System; using System.Web; using NLog; using NLog.Targets; namespace SomeWebApplication { public class Global : System.Web.HttpApplication { // // this event handler is executed at the very start of the web application // so this is a good place to configure targets programmatically // // alternative you could place this code in a static type constructor // protected void Application_Start(Object sender, EventArgs e) { ASPNetTraceTarget target = new ASPNetTraceTarget(); target.Layout = "${logger} ${message}"; NLog.Config.SimpleConfigurator.ConfigureForTargetLogging(target, LogLevel.Debug); } } }
