Log4Net試用

1 添加參考

2 新增Log4Net.config，放在Bin\Debug下

3 Form1.vb添加ReadOnly logger As ILog = LogManager.GetLogger(GetType(Form1))

4 AssemblyInfo.vb添加<Assembly: log4net.Config.XmlConfigurator(ConfigFile:="Log4Net.config", Watch:=True)>

5 logger.Debug("divide err", ex)