private void btnExport_Click(object sender, EventArgs e) { if (txtStockCode.Text != "") { fdlgBrowse.SelectedPath = System.IO.Directory.GetCurrentDirectory(); DialogResult result = fdlgBrowse.ShowDialog(); if (result == DialogResult.OK) { ADOMDLib.ExportCSV(txtStockCode.Text, fdlgBrowse.SelectedPath); } } else { MessageBox.Show("Nhập mã stock vào TextBox!"); } }