private void btnAddAccs_Click(object sender, EventArgs e) { var ofd = new OpenFileDialog(); if (ofd.ShowDialog() != DialogResult.OK) { return; } try { if (ofd.FileName != null) { var accsCount = mainWorker.LoadAccounts(ofd.FileName); lblAccountsCount.Text = accsCount.ToString(); } } catch (Exception ex) { MessageBox.Show("Произошла ошибка: " + ex.Message); } }