MVC Action Filters using log4net

Add log4net dll reference to your MVC project
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Create following  model inside your models folder
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using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Text;
using System.Web;
using System.Web.Mvc;

namespace MVCWebApp.Models
{
    public class LoggingFilterAttribute : ActionFilterAttribute
    {
        #region Logging
        /// <summary>
        /// Access to the log4Net logging object
        /// </summary>
        protected static readonly log4net.ILog log =
          log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
        private const string StopwatchKey = "DebugLoggingStopWatch";
        #endregion
        public override void OnActionExecuting(ActionExecutingContext filterContext)
        {
            if (log.IsDebugEnabled)
            {
                var loggingWatch = Stopwatch.StartNew();
                filterContext.HttpContext.Items.Add(StopwatchKey, loggingWatch);

                var message = new StringBuilder();
                message.Append(string.Format("Executing controller {0}, action {1}",
                    filterContext.ActionDescriptor.ControllerDescriptor.ControllerName,
                    filterContext.ActionDescriptor.ActionName));

                log.Debug(message);
            }
        }
        public override void OnActionExecuted(ActionExecutedContext filterContext)
        {
            if (log.IsDebugEnabled)
            {
                if (filterContext.HttpContext.Items[StopwatchKey] != null)
                {
                    var loggingWatch = (Stopwatch)filterContext.HttpContext.Items[StopwatchKey];
                    loggingWatch.Stop();

                    long timeSpent = loggingWatch.ElapsedMilliseconds;

        var message = new StringBuilder();
        message.Append(string.Format("Finished executing controller {0}, action {1}-time spent {2}",
            filterContext.ActionDescriptor.ControllerDescriptor.ControllerName,
        filterContext.ActionDescriptor.ActionName,
        timeSpent));

                    log.Debug(message);
                    filterContext.HttpContext.Items.Remove(StopwatchKey);
                }
            }
        }
    }
}

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Add following content to main Web.Config
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 <configSections>
    <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net" />
  </configSections>

  <log4net debug="false">
    <appender name="LogFileAppender" type="log4net.Appender.FileAppender">
      <param name="File" value="C:\logs.txt" />
     
    <param name="AppendToFile" value="true"/>
      <layout type="log4net.Layout.PatternLayout">
        <param name="ConversionPattern" value="%d [%t] %-5p %c %m%n" />
      </layout>
    </appender>

    <root>
      <level value="All" />
      <appender-ref ref="LogFileAppender" />
    </root>
  </log4net>

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Add LoggingFilter attribute to your respective controllers
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[LoggingFilter]
    public class HomeController : Controller
{
}