NLog Helpper日志帮助类配置和使用

1.帮助类  (首先需要引入NLog.dll)

 using System;

 namespace XXXXXX
 {
     /// <summary>
     /// 用法实例 : NLogTest.NlogInstance log = new NLogTest.NlogInstance("NameSpace.ClassName.FunctionName");
     /// log.Debug();log.Error();
     /// </summary>
     public class NlogInstance : IDisposable
     {
         private bool alreadyDisposed = false;
         private NLog.Logger logger;

         private NlogInstance(NLog.Logger logger)
         {
             this.logger = logger;
         }

         public NlogInstance(string name)
             : this(NLog.LogManager.GetLogger(name))
         {
         }

         public static NlogInstance Default { get; private set; }

         static NlogInstance()
         {
             Default = new NlogInstance(NLog.LogManager.GetCurrentClassLogger());
         }

         public void Debug(string msg, params object[] args)
         {
             logger.Debug(msg, args);
         }

         public void Debug(string msg, Exception err)
         {
             logger.Debug(msg, err);
         }

         public void Info(string msg, params object[] args)
         {
             logger.Info(msg, args);
         }

         public void Info(string msg, Exception err)
         {
             logger.Info(msg, err);
         }

         public void Trace(string msg, params object[] args)
         {
             logger.Trace(msg, args);
         }

         public void Trace(string msg, Exception err)
         {
             logger.Trace(msg, err);
         }

         public void Error(string msg, params object[] args)
         {
             logger.Error(msg, args);
         }

         public void Error(string msg, Exception err)
         {
             logger.Error(msg, err);
         }

         public void Fatal(string msg, params object[] args)
         {
             logger.Fatal(msg, args);
         }

         public void Fatal(string msg, Exception err)
         {
             logger.Fatal(msg, err);
         }

         protected void Dispose(bool disposing)
         {
             if (alreadyDisposed) return; //保证不重复释放
             if (disposing)
             {
                 logger = null;
             }
             alreadyDisposed = true;
         }

         public void Dispose()
         {
             //调用带参数的Dispose方法，释放托管和非托管资源
             Dispose(true);
             //手动调用了Dispose释放资源，那么析构函数就是不必要的了，这里阻止GC调用析构函数
             System.GC.SuppressFinalize(this);
         }

         ~NlogInstance()
         {
             Dispose(false);
         }
     }

 }

2.配置  Nlog.config

 <nlog xmlns="http://www.nlog-project.org/schemas/NLog.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
   <targets>
     <target name="Trace" xsi:type="File"
                     fileName="${basedir}/Logs/${shortdate}/Trace.txt" maxArchiveFiles=""
                     layout="${longdate} | ${level:uppercase=false} | ${message} ${onexception:${exception:format=tostring} ${newline} ${stacktrace} ${newline}" />
     <target name="Trace_Error" xsi:type="File"
   fileName="${basedir}/Logs/${shortdate}/Trace_Error.txt" maxArchiveFiles=""
                     layout="${longdate} | ${level:uppercase=false} | ${message} ${onexception:${exception:format=tostring} ${newline} ${stacktrace} ${newline}" />
   </targets>
   <rules>
     <logger name="*" level="Info" writeTo="Trace" />
     <logger name="*" level="Error" writeTo="Trace_Error" />
   </rules>
 </nlog>