private void button1_Click(object sender, EventArgs e) { GetConnection(); DataGridViewRow dr = dataGridView1.SelectedRows[0]; string id = dr.Cells[0].Value.ToString(); string passwd = dr.Cells[1].Value.ToString(); string sql = "delete from user where id='" + id + "' and passwd='" + passwd + "'"; MySqlCommand cmd = new MySqlCommand(sql, conn); conn.Open(); cmd.ExecuteNonQuery(); conn.Close(); MessageBox.Show("회원이 삭제되었습니다."); Hide(); UserAdmin user = new UserAdmin(); user.ShowDialog(); Close(); }