public ShowTestResults()
        {
            InitializeComponent();
            ITestResultRepository testResultRepository = new TestResultRepository(ConfigurationManager.ConnectionStrings["ConnectionPatientResults"].ConnectionString);
            var parameters = new[]
            {
                new SqlParameter(StoredProcedureParameters.spName, PatientRepository.PatientName),
                new SqlParameter(StoredProcedureParameters.spLastName, PatientRepository.PatientLastName)
            };
            var result = testResultRepository.ExecuteReader(StoredProcedureNames.SpGetPatientResultByName,
                                                            TestResultParser.Instance.MakeResult, parameters);

            DataTable dataTable = result.ConvertToDataTable();

            dataGridTestResults.ItemsSource = dataTable.DefaultView;
        }