在WPF richtextbox中使用NLog

<configuration>
  <configSections>
    <section name="nlog" type="NLog.Config.ConfigSectionHandler, NLog"/>
  </configSections>
  <nlog>
    <targets>
      <target name="file" xsi:type="File" fileName="log.txt" layout="${longdate} ${level} ${message}" />
    </targets>
    <rules>
      <logger name="*" minlevel="Trace" writeTo="file" />
    </rules>
  </nlog>
</configuration>

using NLog;
using NLog.Targets;
using NLog.Config;

public partial class MainWindow : Window
{
    private Logger logger;

    public MainWindow()
    {
        InitializeComponent();

        // 初始化NLog配置
        LoggingConfiguration config = new LoggingConfiguration();
        RichTextBoxTarget target = new RichTextBoxTarget();
        target.ControlName = "richtextbox1"; // richtextbox的名称
        target.FormName = "MainWindow"; // 窗口的名称
        config.AddTarget("richtextbox", target);
        config.LoggingRules.Add(new LoggingRule("*", LogLevel.Trace, target));
        LogManager.Configuration = config;

        // 获取日志记录器
        logger = LogManager.GetCurrentClassLogger();
    }

    private void LogButton_Click(object sender, RoutedEventArgs e)
    {
        // 记录日志信息
        logger.Trace("This is a trace message");
        logger.Debug("This is a debug message");
        logger.Info("This is an info message");
        logger.Warn("This is a warning message");
        logger.Error("This is an error message");
        logger.Fatal("This is a fatal message");
    }
}