如何在VS2010下使用Log4Net

log4net has a known issue of referencing a System.Web component which is not part of the .NET Framework 4 Client Profile and the VS2010 by default sets project target to be the lightweighted Client Profile. The solution is to change the target to .NET Framework 4:

Right click project -> properties -> Application. Change:

 .NET Framework 4 Client Profile 

to be:

 .NET Framework 4 

... and that should work, i.e. you can use log4net again...

 

 

来自：http://stackoverflow.com/questions/1767253/log4net-with-net-4-0

 

 

 

 范例：

 

App.config

 <?xml version="1.0"?><configuration> <configSections> <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net-net-1.0" /> </configSections> <log4net> <root> <level value="ALL" /> <appender-ref ref="LogFileAppender" /> </root> <appender name="LogFileAppender" type="log4net.Appender.FileAppender" > <param name="File" value="log-file.txt" /> <param name="AppendToFile" value="true" /> <layout type="log4net.Layout.PatternLayout"> <param name="ConversionPattern" value="%d [%t] %-5p %c [%x] <%X{auth}>%n - %m%n" /> </layout> </appender> </log4net> <startup> <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.0"/> </startup></configuration>

 

注意：configSections节点和startup节点的顺序，否则只见文件而无法输出日志

 

 

AssemblyInfo.cs中添加

[assembly: log4net.Config.DOMConfigurator(ConfigFileExtension = "config", Watch = true)]

 

.cs代码正常使用

log4net.ILog log = log4net.LogManager.GetLogger("MyLogger"); log.Debug("test");