How to export a crystal report to Notepad using c#? But the code below is for exporting in .pdf

private void frmRptInvoice_Load(object sender, EventArgs e)
        {

            ReportDocument cryRpt = new ReportDocument();
            TableLogOnInfos crtableLogoninfos = new TableLogOnInfos();
            TableLogOnInfo crtableLogoninfo = new TableLogOnInfo();
            ConnectionInfo crConnectionInfo = new ConnectionInfo();
            Tables CrTables;
            cryRpt.Load("C:/Users/Gilbert/Desktop/OKSOFT/softNew/bill2.rpt");
             //C:\Users\Gilbert\Desktop\softNew\softNew\rptAllBills.rpt
            crConnectionInfo.ServerName = "GILBERT-PC";
            crConnectionInfo.DatabaseName = "dbAutorec";
            crConnectionInfo.UserID = "sa";
            crConnectionInfo.Password = "newgt";

            CrTables = cryRpt.Database.Tables;
            foreach (CrystalDecisions.CrystalReports.Engine.Table CrTable in CrTables)
            {
                crtableLogoninfo = CrTable.LogOnInfo;
                crtableLogoninfo.ConnectionInfo = crConnectionInfo;
                CrTable.ApplyLogOnInfo(crtableLogoninfo);
            }

            crystalReportViewer1.ReportSource = cryRpt;
            crystalReportViewer1.Refresh();

            cryRpt.ExportToDisk(ExportFormatType.PortableDocFormat, "catalogueReport.pdf");
            //Preview the generated PDF
            System.Diagnostics.Process.Start(Application.StartupPath + "\\catalogueReport.pdf");
        }