Log4Net读取XML配置文件及在代码中完成添加Logger操作

解决问题：

将log4net配置文件与app.config配置文件分开
手动读取log4net配置文件
手动创建logger
可将日志输出功能封装在类库中，应用程序引用时无需添加assembly引用及配置文件添加

 private void CreatLoggers()

        {

            XmlDocument log4netConfig = new XmlDocument();

            log4netConfig.LoadXml(@"

                    <log4net>

                        <logger name=""logerror"">

                          <level value=""ERROR"" />

                          <appender-ref ref=""ErrorAppender"" />

                        </logger>

                        <logger name=""loginfo"">

                          <level value=""INFO"" />

                          <appender-ref ref=""InfoAppender"" />

                        </logger>

                        <logger name=""logdebug"">

                          <level value=""DEBUG"" />

                          <appender-ref ref=""DebugAppender"" />

                        </logger>

                        <appender name=""DebugAppender"" type=""log4net.Appender.RollingFileAppender"">

                          <param name=""File"" value=""Log\\LogDebug\\"" />

                          <param name=""AppendToFile"" value=""true"" />

                          <param name=""MaxSizeRollBackups"" value=""100"" />

                          <param name=""MaxFileSize"" value=""10240"" />

                          <param name=""StaticLogFileName"" value=""false"" />

                          <param name=""DatePattern"" value=""yyyyMMdd&quot;.txt&quot;"" />

                          <param name=""RollingStyle"" value=""Date"" />

                          <layout type=""log4net.Layout.PatternLayout"">

                            <param name=""ConversionPattern"" value=""%d[%t] %m ;%n"" />

                          </layout>

                        </appender>

                        <appender name=""ErrorAppender"" type=""log4net.Appender.RollingFileAppender"">

                          <param name=""File"" value=""Log\\LogError\\"" />

                          <param name=""AppendToFile"" value=""true"" />

                          <param name=""MaxSizeRollBackups"" value=""100"" />

                          <param name=""MaxFileSize"" value=""10240"" />

                          <param name=""StaticLogFileName"" value=""false"" />

                          <param name=""DatePattern"" value=""yyyyMMdd&quot;.txt&quot;"" />

                          <param name=""RollingStyle"" value=""Date"" />

                          <layout type=""log4net.Layout.PatternLayout"">

                            <param name=""ConversionPattern"" value=""%d[%t] %m ;%n"" />

                          </layout>

                        </appender>

                        <appender name=""InfoAppender"" type=""log4net.Appender.RollingFileAppender"">

                          <param name=""File"" value=""Log\\LogInfo\\"" />

                          <param name=""AppendToFile"" value=""true"" />

                          <param name=""MaxFileSize"" value=""10240"" />

                          <param name=""MaxSizeRollBackups"" value=""100"" />

                          <param name=""StaticLogFileName"" value=""false"" />

                          <param name=""DatePattern"" value=""yyyyMMdd&quot;.txt&quot;"" />

                          <param name=""RollingStyle"" value=""Date"" />

                          <layout type=""log4net.Layout.PatternLayout"">

                            <param name=""ConversionPattern"" value=""%d[%t] %m ;%n "" />

                          </layout>

                        </appender>

                    </log4net>");

            ILoggerRepository rep = LogManager.CreateRepository(Guid.NewGuid().ToString());

            XmlConfigurator.Configure(rep, log4netConfig["log4net"]);

            logdebug = LogManager.GetLogger(rep.Name, "logdebug");

            loginfo = LogManager.GetLogger(rep.Name, "loginfo");

            logerror = LogManager.GetLogger(rep.Name, "logerror");

        }

　　上述XML文件内容我手动放在代码中，也可以存在xml文件中去进行读取操作，一个道理。

　　值得强调的是：

在代码中形式的配置文件内容都是两个引号（“”），不是一个（”）
不需要添加那句“[assembly: log4net.Config.XmlConfigurator(Watch = true)]”