How to add checkbox to dynamic table?

private void member_delete_Load(object sender, EventArgs e)
        {

            conn = new conDB().SetConnection();
            conn.Open();
            string sql = "select Member.ID_Member,Member.NAME_Member,Member.ADDRESS_Member,Member.TEL_Member,Member.EMAIL_Member,Member.DOB_Memner,Member.CONGENITALDISEASE_Member,Member.DRUGHYPERSENSITIVITY_Member from Member "; ;
            SqlCommand testcommand = new SqlCommand(sql, conn);

            da = new SqlDataAdapter(testcommand);
            tb = new DataTable();
            ds = new DataSet();
            da.Fill(ds, "Member");
            dataGridView1.DataSource = ds.Tables["Member"];

            myCheck = new DataGridViewCheckBoxColumn();
            myCheck.HeaderText = "Extra";
            myCheck.DataPropertyName = "Extra";
            myCheck.FalseValue = "1";
            myCheck.TrueValue = "0";
            dataGridView1.AutoGenerateColumns = false;
            dataGridView1.Columns.Insert(1, myCheck);
            setdatagrid();
        }