crystal reports 2013

private void btnLoad_Click(object sender, EventArgs e)
        {
            dbc.openDbConn();
 
            OleDbDataAdapter dataAdapter = new OleDbDataAdapter("SELECT tblLoan.BannerID, tblStudent.Grade, tblStudent.StudName, "+
                                    "tblStudent.StudSurname, tblBook.Title, tblLoan.CopyID FROM tblStudent INNER JOIN "+
                                    "((tblBook INNER JOIN tblCopy ON tblBook.ISBN = tblCopy.ISBN) INNER JOIN tblLoan ON tblCopy.CopyID = tblLoan.CopyID) "+
                                    "ON tblStudent.BannerID = tblLoan.BannerID WHERE tblStudent.Grade = '" + cmbGrade.Text + "'", dbc.conn);
 
            DataSet dataset = new DataSet();
 
            dataAdapter.Fill(dataset, "tblLoan");
 
            DataTable table = dataset.Tables[0];
 
            if (dataset.Tables[0].Rows.Count == 0)
            {
                crystalReportViewer1.ReportSource = null;
 
                crystalReportViewer1.Refresh();
            }
            else
            {
                CrystalReport1 o<pre lang="c#">
bjRpt = new CrystalReport1();

objRpt.SetDataSource(table);
crystalReportViewer1.ReportSource = objRpt;
crystalReportViewer1.Refresh();
}
}