private async void DiagnoseFinishAdding_Click(object sender, RoutedEventArgs e) { var diagnosis = new Diagnosis { PatientId = Patient.Id, Title = DiagnosisTitle.Text, Description = DianosisDescription.Text }; var uploadedDiagnosis = await HttpHandler.CreateDiagnosis(diagnosis); if (uploadedDiagnosis is not null) { Patient.Diagnoses.Add(uploadedDiagnosis); MessageBox.Show("Successful", "Successful request", MessageBoxButton.OK, MessageBoxImage.Information); Close(); } }