Raygun4Net automatic Breadcrumb logging with log4net

log4net.config.xml

<configuration>
  <configSections>
    <section name="RaygunSettings" type="Mindscape.Raygun4Net.RaygunSettings, Mindscape.Raygun4Net" />
    <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler,log4net" />
  </configSections>
  <RaygunSettings apikey="[YOUR-API-KEY-HERE]" breadcrumbsLevel="Debug" />
  <log4net>
    <appender name="breadcrumbAppender" type="Raygun.Examples.RaygunBreadcrumbAppender">
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%message" />
      </layout>
    </appender>
    <root name="RaygunApp">
      <level value="DEBUG" />
      <appender-ref ref="breadcrumbAppender" />
    </root>
  </log4net>
</configuration>

RaygunBreadcrumbAppender.cs

using log4net.Appender;
using log4net.Core;
using Mindscape.Raygun4Net;
using Mindscape.Raygun4Net.Breadcrumbs;

namespace Raygun.Examples
{
  public class RaygunBreadcrumbAppender : AppenderSkeleton
  {
    protected override void Append(LoggingEvent loggingEvent)
    {
      var crumb = new RaygunBreadcrumb();
      int lineNumber;

      if (int.TryParse(loggingEvent.LocationInformation.LineNumber, out lineNumber))
      {
        crumb.LineNumber = lineNumber;
      }

      crumb.Message = RenderLoggingEvent(loggingEvent);
      crumb.ClassName = loggingEvent.LocationInformation.ClassName;
      crumb.MethodName = loggingEvent.LocationInformation.MethodName;
      crumb.CustomData.Add("Thread", loggingEvent.ThreadName);

      if (loggingEvent.Properties != null)
      {
        foreach (var propertyKey in loggingEvent.Properties.GetKeys())
        {
          crumb.CustomData.Add(propertyKey, loggingEvent.Properties[propertyKey]);
        }
      }

      switch (loggingEvent.Level.Name)
      {
        case "ALL":
        case "DEBUG":
          crumb.Level = RaygunBreadcrumbLevel.Debug;
          break;
        case "INFO":
          crumb.Level = RaygunBreadcrumbLevel.Info;
          break;
        case "WARN":
          crumb.Level = RaygunBreadcrumbLevel.Warning;
          break;
        case "FATAL":
        case "ERROR":
          crumb.Level = RaygunBreadcrumbLevel.Error;
          break;
      }

      RaygunClient.RecordBreadcrumb(crumb);
    }
  }
}