public partial class Form1 : Form
{
// Connexion à la BD
OleDbConnection m_ADONetConnection = new OleDbConnection();
// Data Adapter
OleDbDataAdapter m_DataAdapter;
OleDbCommandBuilder m_CommandBuilder;
DataTable Customers = new DataTable();
int m_rowPosition = 0;

// Form principal
public Form1()
{
InitializeComponent();
}

private void Form1_Load(object sender, EventArgs e)
{
// Connexion à la BD
m_ADONetConnection.ConnectionString = @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=c:\Northwind.mdb";
m_ADONetConnection.Open();

m_DataAdapter = new OleDbDataAdapter("Sélectionner * dans les contacts", m_ADONetConnection);
OleDbCommandBuilder m_CommandBuiler = new OleDbCommandBuilder(m_DataAdapter);

// C'est ici que j'ai le message d'erreur du débugger
m_DataAdapter.Fill(Customers);


this.ShowCurrentRecord();

}

private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
// Fermeture de la BD lorsque l'on quitte l'appli
m_ADONetConnection.Close();
m_ADONetConnection.Dispose();
}

// Affichage des données
private void ShowCurrentRecord()
{
if (Customers.Rows.Count == 0)
{
txtContactName.Text = "";
txtState.Text = "";
return;
}
txtContactName.Text = Customers.Rows[m_rowPosition]["CustumerID"].ToString();
txtState.Text = Customers.Rows[m_rowPosition]["State"].ToString();
}
}