log4net - w3toppers.com

Log4Net “Could not find schema information” messages

You can bind in a schema to the log4net element. There are a few floating around, most do not fully provide for the various options available. I created the following xsd to provide as much verification as possible: http://csharptest.net/downloads/schema/log4net.xsd You can bind it into the xml easily by modifying the log4net element: <log4net xsi:noNamespaceSchemaLocation=”http://csharptest.net/downloads/schema/log4net.xsd” xmlns:xsi=”http://www.w3.org/2001/XMLSchema-instance”>

Why do loggers recommend using a logger per class?

With log4net, using one logger per class makes it easy to capture the source of the log message (ie. the class writing to the log). If you don’t have one logger per class, but instead have one logger for the entire app, you need to resort to more reflection tricks to know where the log … Read more

Log4Net config in external file does not work

Do you have the following attribute in your AssemblyInfo.cs file: [assembly: log4net.Config.XmlConfigurator(ConfigFile = “Log4Net.config”, Watch = true)] and code like this at the start of each class that requires logging functionality: private static readonly ILog log = LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType); I have a blog post containing this and other info here.

how do I work around log4net keeping changing publickeytoken

This is how I got things working with version 1.2.11.0. Curse apache for changing the key in the first place 🙂 Download the version of 1.2.11.0 signed with the old key. Sort out your own code out by removing any direct references to log4net (new key) and replace with a reference to the assembly signed … Read more

How to disable creation of empty log file on app start?

I actually found a way to do this in this thread: http://www.l4ndash.com/Log4NetMailArchive/tabid/70/forumid/1/postid/18271/view/topic/Default.aspx I’ve tested the first method and it works. Just in case that link is not longer good I’ll reproduce the code here. Basically the author states that there are two ways of doing this. First way: Create a new locking model that only … Read more

How to log MethodName when wrapping Log4net?

What about the %M and %C variables? http://logging.apache.org/log4net/log4net-1.2.11/release/sdk/log4net.Layout.PatternLayout.html Usage, something like: <layout type=”log4net.Layout.PatternLayout”> <conversionPattern value=”%date [%thread] %-5level %logger [%M %C] – %message%newline” /> </layout> Doesn’t that do what you are after?

MoveNext instead of actual method/task name

All async methods are rewritten into a state machine to satisfy potential await values within the method. The final method in which the code lives is the MoveNext method which is what log4net is reporting. There is really no good way at runtime to transition from MoveNext to the actual method in which the code … Read more

log4net one file per run

I assume that the application should create only one log file every time it runs, so you do not need a rolling file appender (though my solution would apply for rolling file appenders as well): <appender name=”FileAppender” type=”log4net.Appender.FileAppender”> <file type=”log4net.Util.PatternString” value=”c:\temp\App-%date{yyyy-MM-dd_HH-mm-ss}.log” /> <appendToFile value=”true” /> <layout type=”log4net.Layout.PatternLayout”> <conversionPattern value=”%date [%2thread] %-5level – %message%newline” /> </layout> … Read more

When using wrapper, how to preserve class and method name for Log4Net to log?

Log4net allows you to access method name for instance like this %method. This is not the fastest operation but if you need to debug something you may very well use it. I believe your question is about the fact that log4net will not output the correct method name if you use a wrapper. To solve … Read more

Log4net xml output

As suggested by MrPeregrination you need to write a class deriving from XmlLayoutBase, override the FormatXml method and instruct your appender to use it as layout: class Program { static void Main(string[] args) { XmlConfigurator.Configure(); ILog log = log4net.LogManager.GetLogger(typeof(Program)); log.Debug(“Hello world”); } } public class MyXmlLayout : XmlLayoutBase { protected override void FormatXml(XmlWriter writer, LoggingEvent … Read more