C#NLog帮助类同时输出内容到文件和文本框

1.引用NLog.dll文件

2.在主窗体加入以下代码进行格式化

 //初始化代码
      private void Initlogger()
        {
            //step1.Create configuration object
            LoggingConfiguration logConfig = new LoggingConfiguration();
            //step2.create targets and add them to the configuration
            RichTextBoxTarget rtbTarget = new RichTextBoxTarget();
            logConfig.AddTarget("richTextBox", rtbTarget);
            rtbTarget.FormName = "Form1";//your winform class name
            rtbTarget.ControlName = "richTextBox1";//your RichTextBox control/variable name

            FileTarget fileTarget = new FileTarget();
            logConfig.AddTarget("logFile", fileTarget);
           
            //step3 Set target properties
            string commonLayout = "${date:format=yyyy-MM-dd HH\:mm\:ss}${logger}${message}";
            rtbTarget.Layout = commonLayout;

            DateTime curDateTime = DateTime.Now;
            string curDatetimeStr = string.Format("{0:yyyy-MM-dd_HHmmss}", curDateTime);

            // fileTarget.FileName = "${basedir}/" + curDatetimeStr + "_log.txt";
            fileTarget.FileName = "${basedir}/Logs/${shortdate}/log.csv";
            fileTarget.Layout = commonLayout;
           
            //step4 Define rules
            LoggingRule ruleRichTextBox = new LoggingRule("*", LogLevel.Debug, rtbTarget);
            logConfig.LoggingRules.Add(ruleRichTextBox);

            LoggingRule ruleFile = new LoggingRule("*", LogLevel.Debug, fileTarget); logConfig.LoggingRules.Add(ruleFile);
            //step5 Activate the configuration
            LogManager.Configuration = logConfig;
        }

3.在窗体的Load事件中初始化代码

 public Logger logger;
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            Initlogger();
            logger = LogManager.GetLogger("");   
        }

4.调用方法验证

  logger.Info("我在执行");

5.在其他类库里面使用的话，引用NLog.dll,不用Initlogger(),只需要获取Logger

的实例化对象即可。

6.参考文章

  https://www.crifan.com/csharp_implement_log_system_same_time_output_to_file_and_terminal/
  
  https://www.cnblogs.com/animal/articles/4073141.html
  https://www.cnblogs.com/Can-daydayup/p/11182958.html