private void button4_Click(object sender, EventArgs e)
    {
        string MySelectString = "SELECT * FROM QE_AGENT.IMP_BANK WHERE BANK_LOT = '13120314' AND BANK_COMPTE = '1021'";
        string MyConnString = "info de connexion";

        OdbcConnection MyConnec = new OdbcConnection(MyConnString);

        MyConnec.Open();
        OdbcDataAdapter adapter = new OdbcDataAdapter(MySelectString, MyConnec);
        DataSet MyDataSet = new DataSet();

        adapter.Fill(MyDataSet);  <---- i get the error here
    }