public ActionResult DeleteConfirmed(int id)
        {
            var role = UserRole();

            if (!role.WS_CreateVisit)
            {
                return(RedirectToAction("Unauthorized", "Error", new { role.Role, role.UserName }));
            }

            WelcomeVisit welcomeVisit = db.WelcomeVisits.Find(id);

            if (welcomeVisit == null)
            {
                return(HttpNotFound());
            }

            DateTime dnow = DateTime.Now;

            double hours = (dnow - welcomeVisit.CreatingDT).TotalHours;

            if (hours > 24 || welcomeVisit.FromDT < dnow) //Ebben az esetben a histbe mentődnek az adatok.
            {
                WelcomeVisitHist vishist = new WelcomeVisitHist
                {
                    Visit_ID   = welcomeVisit.Visit_ID,
                    Visit      = welcomeVisit.Visit,
                    FromDT     = welcomeVisit.FromDT,
                    ToDT       = welcomeVisit.ToDT,
                    Company    = welcomeVisit.Company,
                    CreatingDT = welcomeVisit.CreatingDT,
                    Deleted    = true
                };
                db.WelcomeVisitHists.Add(vishist);

                WelcomeGuestVisitHist gvhist;
                foreach (WelcomeGuestVisit ogv in welcomeVisit.GuestVisits)
                {
                    if (!ogv.Guest.Deleted)
                    {
                        gvhist = new WelcomeGuestVisitHist
                        {
                            Guest     = ogv.Guest,
                            VisitHist = vishist
                        };
                        db.WelcomeGuestVisitHists.Add(gvhist);
                    }
                }
            }

            db.WelcomeVisits.Remove(welcomeVisit);
            db.SaveChanges();

            return(RedirectToAction("Index"));
        }
        /// <summary>
        /// A már elmúlt időpontú látogatásokat és a hozzá kapcsolodó vendégeket átteszi a hisztorikus adatokba.
        /// </summary>
        /// <param name="dnow"></param>
        private void OldVisitsToHist(DateTime dnow)
        {
            var oviss = db.WelcomeVisits
                        .Include(v => v.GuestVisits)
                        .Where(v => v.ToDT < dnow).ToList();

            if (oviss.Count() > 0)
            {
                foreach (var ov in oviss)
                {
                    WelcomeVisitHist vishist = new WelcomeVisitHist
                    {
                        Visit_ID   = ov.Visit_ID,
                        Visit      = ov.Visit,
                        FromDT     = ov.FromDT,
                        ToDT       = ov.ToDT,
                        Company    = ov.Company,
                        CreatingDT = ov.CreatingDT,
                        Deleted    = false
                    };
                    db.WelcomeVisitHists.Add(vishist);
                    foreach (var ogv in ov.GuestVisits)
                    {
                        if (!ogv.Guest.Deleted)
                        {
                            WelcomeGuestVisitHist gvhist = new WelcomeGuestVisitHist
                            {
                                Guest     = ogv.Guest,
                                VisitHist = vishist
                            };
                            db.WelcomeGuestVisitHists.Add(gvhist);
                        }
                    }
                    db.WelcomeVisits.Remove(ov);
                }
                db.SaveChanges();
            }
        }