How can I print XPS without open dialog?

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C#

XPS

I try to print to XPS printer (it's not my default printer), but the program opens me a dialog.

Can I skip the dialog?

This is the code:

pSettings = new PrinterSettings();
pSettings.PrintFileName = "test.xps";
RawPrinterHelper.SendStringToPrinter(pSettings.PrinterName, toSend);
spcn = new StandardPrintController();
printDocument1.PrinterSettings.PrinterName = "Microsoft XPS Document Writer";
printDocument1.PrintController = spcn;
printDocument1.PrintPage += new PrintPageEventHandler(printDocument1_PrintPage);
printDocument1.Print();

thanks!