private void GetMailHeaders(object param) { if (SelectedFolder != "") { IsBrowserVisible = false; using (new BusyIndicator()) { try { _mailbox.SelectFolder(SelectedFolder); Mails = _mailbox.GetMailHeaders(); } catch (Exception ex) { MessageBox.Show(ex.Message, "Произошла ошибка!", MessageBoxButton.OK, MessageBoxImage.Error); } } IsBrowserVisible = !IsInputMailVisible && SelectedMailText != null; } }