//removes a patient from the db and refreshes ItemsSource of the DataGrid
private async void btnDeletePatient_Click(object sender, RoutedEventArgs e)
{
var result = MessageBox.Show("Вы уверены, что хотите удалить карту пациента и все его обращения?", "Внимание!",
MessageBoxButton.YesNo);
if (result == MessageBoxResult.Yes)
{
var currentCard = dgPatients.SelectedItem as PatientCard;
if (currentCard != null)
{
Int32 id = currentCard.Id;
ClinicDataRepository clinicRepo = new ClinicDataRepository();
try
{
clinicRepo.DeleteCard(id);
dgPatients.ItemsSource = await clinicRepo.GetPatientCards();
}
catch (SqlException)
{
var err = ConfigurationSettings.AppSettings["dbError"].ToString();
MessageBox.Show(err, "Ошибка");
throw;
}
catch
{
MessageBox.Show("Что то пошло не так, приложение будет закрыто", "Ошибка");
throw;
}
}
}
}
//loads DataGrids asynchronously.
private async void InitializeDataGrids()
{
//the cts is cancelling async animation task after we are done here
CancellationTokenSource cts = new CancellationTokenSource();
if (isInitializingFirstTime)
{
dgPatients.Visibility = Visibility.Collapsed;
lblLoading.Visibility = Visibility.Visible;
}
try
{
Animation(cts.Token);
ClinicDataRepository clinicRepo = new ClinicDataRepository();
dgPatients.ItemsSource = await clinicRepo.GetPatientCards();
//after adding a new request or after modifying one,
//we should refresh the DataGrid to see the changes
if (tempCard != null)
{
dgRequests.ItemsSource = await clinicRepo.GetPatientRequests(tempCard.Id);
}
}
catch (SqlException)
{
var err = ConfigurationSettings.AppSettings["dbError"].ToString();
MessageBox.Show(err, "Ошибка");
throw;
}
catch
{
MessageBox.Show("Что то пошло не так, приложение будет закрыто", "Ошибка");
throw;
}
if (isInitializingFirstTime)
{
cts.Cancel();
lblLoading.Content = "";
lblLoading.Visibility = Visibility.Collapsed;
dgPatients.Visibility = Visibility.Visible;
//don't invoke the loading loop next time
isInitializingFirstTime = false;
}
}