private void ShowAllPhysicalPersonCreditsMenuItem_OnClick(object sender, RoutedEventArgs e) { if (SelectedPhysicalPersonClient == null) { MessageBox.Show("Выберите клиента корректным образом!"); return; } var creditsWindow = new CreditsWindow(); creditsWindow.Title = $"Все кредиты клиента: {SelectedPhysicalPersonClient.DisplayName}"; using (var repo = new PhysicalPersonClientRepository()) { creditsWindow.CreditsDataGrid.DataContext = repo.GetAllClientCredits(SelectedPhysicalPersonClient.Id); creditsWindow.ShowDialog(); } }