Ejemplos de registro de seguimiento de .NET

Este tema contiene un ejemplo de registro de seguimiento de .NET que muestra cómo registrar un evento solo cuando el nivel de detalle de la sesión es detallado y cómo registrar datos de eventos estructurados.

using System;
using System.Text;
using System.Diagnostics.Tracing;

namespace MoreSimpleTraceLoggingExamples
{
    class Program
    {
        private static EventSource log = new EventSource(
            "SimpleTraceLoggingProvider",
            EventSourceSettings.EtwSelfDescribingEventFormat);

        static void Main(string[] args)
        {
            StringBuilder cmdLine = new StringBuilder();
            foreach (string arg in args)
            {
                cmdLine.AppendFormat("{0} ", arg);
            }

            // Log event verbosity level and opcode
            // This event is only logged when the session verbosity level is verbose.
            log.Write("CmdLine", new EventSourceOptions {Level=EventLevel.Verbose, Opcode=EventOpcode.Info },
                                 new { Args = cmdLine.ToString().TrimEnd() });

            try
            {
                int j = 0;
                int i = 1 / j;
            }
            catch (Exception e)
            {
                var error = new Error { ErrorTitle = e.Message, CallStack = e.StackTrace, ErrType = ErrorType.Exception };
                log.Write("Error", new { Error = error, ErrorType = e.ToString() });
            }
        }
    }

    [EventData] // [EventData] makes it possible to pass an instance of the class as an argument to EventSource.Write()
    public class Error
    {
        public string ErrorTitle { get; set; }
        public string CallStack { get; set; }
        public ErrorType ErrType { get; set; }
    }

    public enum ErrorType
    {
        Exception,
        UserError,
        ProgramError
    }
}