How Can I Programmatically Print PDFs in .NET Using Google Pdfium?

Automating PDF Printing in .NET using Google Pdfium

Efficiently managing automated document printing is crucial for streamlined workflows. This article addresses the challenge of programmatically printing PDF files within a Windows .NET environment, offering a solution using the powerful Google Pdfium library and its .NET wrapper, PdfiumViewer.

This open-source library provides a straightforward API for simplifying PDF printing. The following code example demonstrates how to silently print multiple copies of a PDF:

<code class="language-csharp">public bool PrintPDF(string printer, string paperName, string filename, int copies)
{
    try
    {
        // Configure printer settings
        var printerSettings = new PrinterSettings
        {
            PrinterName = printer,
            Copies = (short)copies,
        };

        // Configure page settings for paper size
        var pageSettings = new PageSettings(printerSettings)
        {
            Margins = new Margins(0, 0, 0, 0), // Set margins to zero
        };
        foreach (PaperSize size in printerSettings.PaperSizes)
        {
            if (size.PaperName == paperName)
            {
                pageSettings.PaperSize = size;
                break;
            }
        }

        // Initiate PDF printing
        using (var document = PdfDocument.Load(filename))
        {
            using (var printDocument = document.CreatePrintDocument())
            {
                printDocument.PrinterSettings = printerSettings;
                printDocument.DefaultPageSettings = pageSettings;
                printDocument.PrintController = new StandardPrintController();
                printDocument.Print();
            }
        }
        return true;
    }
    catch (Exception ex)
    {
        // Handle exceptions appropriately (log, display error message, etc.)
        return false;
    }
}</code>

This method offers a robust and reliable approach to sending PDF files to the printer queue, enhancing productivity and automating a common task. PdfiumViewer significantly simplifies the process, providing developers with a convenient tool for seamless PDF printing integration.

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