Why Crystal report showing only first record?

CrystalReportfeespy feespay = new CrystalReportfeespy();
                        OleDbConnection con9 = new OleDbConnection();
                        con9.ConnectionString = ConfigurationSettings.AppSettings["connection"];
                        con9.Open();

                        OleDbCommand cmd9 = new OleDbCommand("select * from StudentFeesPay where ReciptNo=@rcptno AND RegId=@rg ", con9);
                        cmd9.Parameters.Add(new OleDbParameter("@rcptno", txtReciptNo.Text));
                        cmd9.Parameters.Add(new OleDbParameter("@rg", txtRegId.Text));
                                             
                        OleDbDataAdapter da9 = new OleDbDataAdapter();
                        da9.SelectCommand = cmd9;

                        DataSetFeesPayment ds9 = new DataSetFeesPayment();
                        da9.Fill(ds9, "StudentFeesPay");
                        feespay.SetDataSource(ds9);
                        crystalReportViewer1.ReportSource = feespay;