private void del_Btn_Click(object sender, EventArgs e) { if (dataGridView1.SelectedRows.Count > 0) { int index = dataGridView1.SelectedRows[0].Index; int id = (int)dataGridView1.Rows[index].Cells["ID"].Value; var result = MessageBox.Show("Are you sure want to deleted this booking?", "Warning!", MessageBoxButtons.YesNo); Booking booking = GData.bookings.Where(b => b.id == id).ToList()[0]; if (result == DialogResult.Yes) { if (DatabaseControl.deleteBooking(booking)) { MessageBox.Show("Selected booking has been deleted!"); showBookings(); } } else { return; } } }