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 techinician?", "Warning!", MessageBoxButtons.YesNo); if (result == DialogResult.Yes) { Technician technician = GData.technicians.Where(t => t.id == id).ToList()[0]; if (DatabaseControl.deleteTechnician(technician)) { MessageBox.Show("Selected Technician has been deleted!"); showTechnicians(); } } else { return; } } }