/// <summary>
/// supprimer toutes les données de la base de données .sdf
/// </summary>
private void ClearAllData()
{
ConnSql.Open();
SqlCeCommand Cmd = new SqlCeCommand("DELETE FROM Articles", ConnSql);
Cmd.ExecuteNonQuery();
Cmd.CommandText = "DELETE FROM Marques";
Cmd.ExecuteNonQuery();
Cmd.CommandText = "DELETE FROM SousFamilles";
Cmd.ExecuteNonQuery();
Cmd.CommandText = "DELETE FROM Familles";
Cmd.ExecuteNonQuery();
ConnSql.Close();
}