private async void TakePictureForRegistration(string fileName) { var response = await registerViewModel.AddFaceToPerson(fileName); if (response == Response.OK) { progressBar.Value = ProgressBarValueFactor * registerViewModel.photosTaken; if (registerViewModel.photosTaken == RequiredNumberOfPhotos) { MessageBox.Show(RegistrationSuccessful); new SignInForm().Show(); Close(); } } else if (response == Response.ApiTrainingError) { MessageBox.Show(ApiErrorMessage); new SignInForm().Show(); Close(); } else { MessageBox.Show(WarningFaceDetection); } }