Удаление выбранной строки из datagridview

public int id_kes=1;
public void DelKES()
        {
            string querystring = " delete from kes where idKes = " + id_kes;
            MySqlCommand command = new MySqlCommand(querystring, Connect());
            command.ExecuteNonQuery();
        }
Form1 f1 =new Form1();
 private void button2_Click(object sender, EventArgs e)
        {
            
                f1.id_ex_kes = Convert.ToInt32(dataGridView1.SelectedCells[0].Value);
                f1.DelKES();
                RefreshKES();
        }

dataGridView1.Columns[0].Visible = false;

dataGridView1.Rows.Remove(dataGridView1.CurrentRow);

private void RefreshKES()
        {
            string querystring = "select * from kes_view";
            dataGridView1.DataSource = Form1.dtExecuteCommand(querystring, Form1.Connect());
 
            
        }

myDataAdapter.Fill(myDataTable);

myDataGridView.DataSource = new DataView(myDataTable);

myDataAdapter.Update(myDataTable);