How to direct print to crystal report with custom paper size

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C#

Dear All,
I need to make direct print a report for a custom paper size, I have set a paper size in
Epson Lx -310 Print server properties , when i sent print command it does not produce print as I expected and it produce Letter size print out. here I attached my coding as well and please help me to find a solution for this issue.

What I have tried:

string refNo = txtTiketNo.Text.Trim();
                        frmPreviewReports Preview = new frmPreviewReports();
                        var cr = new CrystalDecisions.CrystalReports.Engine.ReportDocument();
                        cr.Load(MainClass.reportDirPath + @"\" + @"Direct Print\" + "SupplierReceiptNew.rpt");
                        MainClass.PrintReportTitleDirectPrint(cr);
                        cr.SetDatabaseLogon("DBusername", "dbpassword");
                        cr.RecordSelectionFormula = "{TIKET_DATA.TiketID} = '" + refNo + "'";
                        cr.Refresh();
                        cr.PrintToPrinter(1, true, 0, 0);