private void OpenPhysicalPersonAccountButton_OnClick(object sender, RoutedEventArgs e) { AddingAnyAccountWindow accountWindow = new AddingAnyAccountWindow(); accountWindow.CapitalizationCheckBox.IsEnabled = false; accountWindow.PeriodTextBox.IsEnabled = false; if (PhysicalPersonsDataGrid.CurrentItem != null) { PhysicalPersonClient client = (PhysicalPersonClient)PhysicalPersonsDataGrid.SelectedItem; if (accountWindow.ShowDialog() == true) { using (var repo = new PhysicalPersonClientRepository()) { repo.AddAccount(client.Id, accountWindow.Currency, accountWindow.Amount); } } } else { MessageBox.Show("Выберите нужного клиента!"); } }