public void AddNewRoom(NewRoomModel room)
        {
            Entities db = new Entities();

            if (ModelState.IsValid && room.Capacity != 0)
            {
                Auditorium auditorium = new Auditorium();

                auditorium.AuditoriumName = room.Name;

                auditorium.Capacity = room.Capacity;

                db.Auditorium.Add(auditorium);

                db.SaveChanges();

                int auditoriumId = db.Auditorium.Where(aud => aud.AuditoriumName.Equals(room.Name)).First().AuditoriumId;

                if (room.Wifi)
                {
                    int wifi = db.AdditionalEquipment.Where(addeq => addeq.AdditionalEquipmentName.Equals("Wifi")).First().AdditionalEquipmentId;

                    db.InsertAudEq(auditoriumId, wifi);
                }

                if (room.Monitor)
                {
                    int monitor = db.AdditionalEquipment.Where(addeq => addeq.AdditionalEquipmentName.Equals("Монитор")).First().AdditionalEquipmentId;

                    db.InsertAudEq(auditoriumId, monitor);
                }

                if (room.Projector)
                {
                    int projector = db.AdditionalEquipment.Where(addeq => addeq.AdditionalEquipmentName.Equals("Проектор")).First().AdditionalEquipmentId;

                    db.InsertAudEq(auditoriumId, projector);
                }

                if (room.Microphone)
                {
                    int microphone = db.AdditionalEquipment.Where(addeq => addeq.AdditionalEquipmentName.Equals("Микрофон")).First().AdditionalEquipmentId;

                    db.InsertAudEq(auditoriumId, microphone);
                }

                db.SaveChanges();
            }
        }