private void btnDelete_Click(object sender, EventArgs e) { int blresult = 0; blresult = Convert.ToInt16(MessageBox.Show("Are you sure you want to delete this row?", "Deleting Customer", MessageBoxButtons.OKCancel, MessageBoxIcon.Exclamation)); //MessageBox.Show(blresult.ToString()); if (blresult == 1) { if (string.IsNullOrWhiteSpace(txtCustomerID.Text) != true) { if (bus_cus.Delete(txtCustomerID.Text)) { MessageBox.Show("DELETING SUCCESS", "DELETE", MessageBoxButtons.OK, MessageBoxIcon.Information); LoadData(); ResetValues(); } else { MessageBox.Show("DELETING FAIL", "DELETE", MessageBoxButtons.OK, MessageBoxIcon.Error); } } else { MessageBox.Show("Please enter the Customer ID you want to delete in the Customer ID box!"); txtCustomerID.Focus(); } }//Kết thúc thao tác xóa }