public string GetVisitationByDoctorID(long doctor_id)
        {
            HospitalDatabaseEntities database = new HospitalDatabaseEntities();
            var resultSet = database.Scheduled_visitations.Where(visitation => visitation.doctor_id == doctor_id).ToList();

            Hospital.Models.ScheduledVisitation findedVisitation = new Hospital.Models.ScheduledVisitation();
            if (resultSet.Count > 0)
            {
                findedVisitation.Map(resultSet.FirstOrDefault());
                return(JsonConvert.SerializeObject(findedVisitation));
            }
            return(JsonConvert.SerializeObject(new { }));
        }
        public string GetVisitationByDate(string date)
        {
            HospitalDatabaseEntities database = new HospitalDatabaseEntities();

            var ResultSet = database.Scheduled_visitations.Where(history => history.plan_date.ToShortDateString().Equals(date)).ToList();

            Hospital.Models.ScheduledVisitation requestedVisitation = new Hospital.Models.ScheduledVisitation();
            if (ResultSet.Count == 1)
            {
                requestedVisitation.Map(ResultSet.FirstOrDefault());
                return(JsonConvert.SerializeObject(requestedVisitation));
            }

            return(JsonConvert.SerializeObject(new { }));
        }