private void Navigation()
        {
            if (selectedPatient == 0)
                this.Close();

            patientDetail = new clsPatientDetails();
            dateEntry = new clsDateEntry();
            medicalRecord = new clsMedicalRecord();
            assessment = new clsAssessment();
            appointment = new clsAppointment();
            prescription = new clsPrescription();

            patient = new clsPatientModel()
            {
                Appointments = new List<clsAppointmentModel>(),
                Assessment = new List<clsAssessmentModel>(),
                DateEntry = new clsDateEntryModel(),
                MedicalRecords = new clsPatientMedicalRecordModel(),
                PatientDetails = new clsPatientDetailsModel(),
                PatientId = selectedPatient,
                Prescription = new clsPrescriptionModel()
            };

            switch (navigateFrom)
            {
                case NavigationType.Appointments:
                case NavigationType.Patients:
                case NavigationType.Search:
                    patient.PatientDetails = patientDetail.GetByPatientId(selectedPatient);
                    patient.DateEntry = dateEntry.GetbyPatientId(selectedPatient);
                    patient.MedicalRecords = medicalRecord.GetByPatientId(selectedPatient);
                    patient.Prescription = prescription.GetByPatientId(selectedPatient);
                    patient.Assessment = assessment.GetByPatientId(selectedPatient);
                    patient.Appointments = appointment.GetByPatientId(selectedPatient);
                    break;
                case NavigationType.NewPatient:
                    break;
                case NavigationType.RnageOfMotion:
                    break;
                case NavigationType.ViewPatient:
                    break;
                default:
                    break;
            }
        }