Joshua Flanagan

using System;

using System.Diagnostics;

using System.Collections.Generic;

namespace FlimFlan.Diagnostics

{

    public class ColorConsoleTraceListener : ConsoleTraceListener

    {

        Dictionary<TraceEventType, ConsoleColor> eventColor = new Dictionary<TraceEventType, ConsoleColor>();

        public ColorConsoleTraceListener()

        {

            eventColor.Add(TraceEventType.Verbose, ConsoleColor.DarkGray);

            eventColor.Add(TraceEventType.Information, ConsoleColor.Gray);

            eventColor.Add(TraceEventType.Warning, ConsoleColor.Yellow);

            eventColor.Add(TraceEventType.Error, ConsoleColor.DarkRed);

            eventColor.Add(TraceEventType.Critical, ConsoleColor.Red);

            eventColor.Add(TraceEventType.Start, ConsoleColor.DarkCyan);

            eventColor.Add(TraceEventType.Stop, ConsoleColor.DarkCyan);

        }

        public override void TraceEvent(TraceEventCache eventCache, string source, TraceEventType eventType, int id, string message)

        {

            TraceEvent(eventCache, source, eventType, id, "{0}", message);

        }

        public override void TraceEvent(TraceEventCache eventCache, string source, TraceEventType eventType, int id, string format, params object[] args)

        {

            ConsoleColor originalColor = Console.ForegroundColor;

            Console.ForegroundColor = getEventColor(eventType, originalColor);

            base.TraceEvent(eventCache, source, eventType, id, format, args);

            Console.ForegroundColor = originalColor;

        }

        private ConsoleColor getEventColor(TraceEventType eventType, ConsoleColor defaultColor)

        {

            if (!eventColor.ContainsKey(eventType))

            {

                return defaultColor;

            }

            return eventColor[eventType];

        }

    }

}

using System.Diagnostics;

namespace ConsoleApplication1

{

    class Program

    {

        static void Main(string[] args)

        {

            TraceSource trace = new TraceSource("log");

            trace.TraceEvent(TraceEventType.Start, 0);

            trace.TraceInformation("Hello World");

            trace.TraceEvent(TraceEventType.Error, 0, "Something failed.");

            trace.TraceEvent(TraceEventType.Verbose, 0, "I like ice cream.");

            trace.TraceEvent(TraceEventType.Critical, 0, "Something went horribly wrong!");

            trace.TraceEvent(TraceEventType.Verbose, 0, "I like cherries.");

            trace.TraceEvent(TraceEventType.Warning, 0, "This program will end soon...");

            trace.TraceEvent(TraceEventType.Information, 0, "Ending program.");

            trace.TraceEvent(TraceEventType.Stop, 0);

        }

    }

}

  <system.diagnostics>

    <sources>

      <source name="log" switchValue="All">

        <listeners>

          <add name="Console" type="FlimFlan.Diagnostics.ColorConsoleTraceListener, ConsoleApplication1" />

        </listeners>

      </source>

    </sources>

  </system.diagnostics>