Crystal report and dataset in Asp.net

string qry1 = "select top (1) a.coursename,a.name,a.feespaid,a.admissionid,b.invoicenumber from tb_studentfees a inner join tb_invoice b on a.admissionid=b.admissionid where a.admissionid="+ lbladmissionnumber.Text +" order by b.invoicenumber desc";
               SqlCeDataAdapter da1 = new SqlCeDataAdapter(qry1, con);
               DataTable dt = new DataTable();
               da1.Fill(dt);
               if (dt.Rows.Count > 0)
               {


                   //opening crystal report
                   ReportDocument reportdocument = new ReportDocument();
                   String path1 = HttpContext.Current.Request.PhysicalApplicationPath + "FessReceiptt.rpt";
                   reportdocument.Load(path1);
                   //reportdocument.Load(Server.MapPath("~/FessReceiptt.rpt"));
                   reportdocument.SetDataSource(dt);
                   CrystalReportViewer1.ReportSource = reportdocument;
                   CrystalReportViewer1.RefreshReport();
               }