private void GetCurrentAppointments()
        {
            var appointmentService     = new AppointmentsService();
            var specialistService      = new SpecialistsService();
            var allCurrentAppointments = appointmentService.GetAllSchedules();

            var retVal = (from appointment in allCurrentAppointments
                          let specialist = specialistService.GetSingleSpecialist(appointment.SpecialistId)
                                           select new AppointmentRowDto
            {
                Id = appointment.Id, StartDate = appointment.StartDate, EndDate = appointment.EndDate,
                FullName = specialist.FullName,
                Specialization = EnumTranslator.TranslateSpecializationEnum
                                     (Enum.GetName(typeof(Specialization), specialist.Specialization))
            }).ToList();

            this.AllAppointments.ItemsSource = retVal;
        }