display a dataBase Table in my multiple column comboBox

Hi,

I 'am using multi column in combo box. So,I would like to display a database table like this http://www.codeproject.com/Articles/3206/Multi-Column-ComboBox

I tried the below coding but I get only the table date without the table borders:(without the table's form only the data from the Table)

private void affich() {

SqlConnection connection = new SqlConnection(connectionString);

connection.Open();

req = "select id_amort_fiscal+''+amort_fiscal as combined from amortissementFiscal;";

SqlCommand sql = new SqlCommand(req, connection);

dr = new SqlDataAdapter(req, connection);

dr.Fill(ds, "amortissementFiscal");

multiColumnComboBox1.DataSource = ds.Tables["amortissementFiscal"];

multiColumnComboBox1.DisplayMember="combined";

multiColumnComboBox1.ValueMember = "combined";

connection.Close();

thanks for Help