WPF Printing – Set the Printer Automataically on WPF PrintDialog

flowdocumentprintingwpf

I am trying to print a WPF FlowDocument to a particular printer, without prompting the user. The printer is a PDF converter.

This works great except that it prints to the default printer:

   PrintDialog pd = new PrintDialog();
   var doc = ((IDocumentPaginatorSource) RTB.Document).DocumentPaginator;
   // I would like to explicitly set the printer to print to here.
   pd.PrintDocument(doc, "Print Document");

In WinForms there is a System.Drawing.Printing.PrinterSettings object on document which has a PrinterName property which can be set to the printer I want, but I don't see that in WPF.

Best Answer

You first need a reference in your project to System.Printing. Then you can use the following code right after you declare your PrintDialog object.

pd.PrintQueue = new PrintQueue(new PrintServer(), "The exact name of my printer");

The PrintQueue is an object that represents the printer and everything else about that print queue.

Related Solutions

Python – How to flush the output of the print function

In Python 3, print can take an optional flush argument:

print("Hello, World!", flush=True)

In Python 2 you'll have to do

import sys
sys.stdout.flush()

after calling print. By default, print prints to sys.stdout (see the documentation for more about file objects).

Wpf – Printing a WPF FlowDocument

yes, make a copy of the FlowDocument before printing it. This is because the pagination and margins will be different. This works for me.

    private void DoThePrint(System.Windows.Documents.FlowDocument document)
    {
        // Clone the source document's content into a new FlowDocument.
        // This is because the pagination for the printer needs to be
        // done differently than the pagination for the displayed page.
        // We print the copy, rather that the original FlowDocument.
        System.IO.MemoryStream s = new System.IO.MemoryStream();
        TextRange source = new TextRange(document.ContentStart, document.ContentEnd);
        source.Save(s, DataFormats.Xaml);
        FlowDocument copy = new FlowDocument();
        TextRange dest = new TextRange(copy.ContentStart, copy.ContentEnd);
        dest.Load(s, DataFormats.Xaml);

        // Create a XpsDocumentWriter object, implicitly opening a Windows common print dialog,
        // and allowing the user to select a printer.

        // get information about the dimensions of the seleted printer+media.
        System.Printing.PrintDocumentImageableArea ia = null;
        System.Windows.Xps.XpsDocumentWriter docWriter = System.Printing.PrintQueue.CreateXpsDocumentWriter(ref ia);

        if (docWriter != null && ia != null)
        {
            DocumentPaginator paginator = ((IDocumentPaginatorSource)copy).DocumentPaginator;

            // Change the PageSize and PagePadding for the document to match the CanvasSize for the printer device.
            paginator.PageSize = new Size(ia.MediaSizeWidth, ia.MediaSizeHeight);
            Thickness t = new Thickness(72);  // copy.PagePadding;
            copy.PagePadding = new Thickness(
                             Math.Max(ia.OriginWidth, t.Left),
                               Math.Max(ia.OriginHeight, t.Top),
                               Math.Max(ia.MediaSizeWidth - (ia.OriginWidth + ia.ExtentWidth), t.Right),
                               Math.Max(ia.MediaSizeHeight - (ia.OriginHeight + ia.ExtentHeight), t.Bottom));

            copy.ColumnWidth = double.PositiveInfinity;
            //copy.PageWidth = 528; // allow the page to be the natural with of the output device

            // Send content to the printer.
            docWriter.Write(paginator);
        }

    }

Best Answer

Related Solutions

Python – How to flush the output of the print function

Wpf – Printing a WPF FlowDocument

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