using System;

using System.Linq;

using System.Web;

using System.Web.Http.Cors;

using System.Web.Mvc;

using System.Web.Routing;

using System.Data.Entity;

using System.Data.Entity.Infrastructure;

​

namespace ExceptionLogging.Controllers

{

    [EnableCors("*.*", "*.*", "*.*")]

    public class HomeController : Controller

    {

        private LoggingContext loggingContext = new LoggingContext();

        public ActionResult Index()

        {

            var logs = loggingContext.ExceptionLogs.ToList();

            return View(logs);

        }

​

        [HttpGet]

        public ActionResult AddUser()

        {

            return View();

        }

​

        [LogException]

        [HttpPost]

        public ActionResult AddUser(UserDetail userDetail)

        {

            if (userDetail.UserName == null)

            {

                throw new Exception("User Name cannot be empty");

            }

            else

            {

                loggingContext.UserDetails.Add(userDetail);

                loggingContext.SaveChanges();

                ModelState.Clear();

            }

​

            return View();

        }

​

    }

    public class LogExceptionAttribute : FilterAttribute, IExceptionFilter

    {

        public void OnException(System.Web.Mvc.ExceptionContext filterContext)

        {

            if (!filterContext.ExceptionHandled)

            {

​

                var exceptionLog = new ExceptionLog()

                {

                    ControllerName = filterContext.RouteData.Values["controller"].ToString(),

                    ActionName = filterContext.RouteData.Values["action"].ToString(),

                    ExceptionMessage = filterContext.Exception.Message,

                    StackTrace = filterContext.Exception.StackTrace,

                    LogDate = DateTime.Now

                };

​

                var ctx = new LoggingContext();

                ctx.ExceptionLogs.Add(exceptionLog);

                ctx.SaveChanges();

​

                filterContext.ExceptionHandled = true;

​

                filterContext.Result = new RedirectToRouteResult(

                new RouteValueDictionary

                {

                    { "controller", "Home" },

                    { "action", "Index" }

                });

            };

        }

​

    }

    public partial class LoggingContext : DbContext

    {

        public LoggingContext()

            : base("name=LoggingContext")

        {

        }

        protected override void OnModelCreating(DbModelBuilder modelBuilder)

        {

            throw new UnintentionalCodeFirstException();

        }

        public virtual DbSet<ExceptionLog> ExceptionLogs { get; set; }

        public virtual DbSet<UserDetail> UserDetails { get; set; }

    }

}