Rmg.PdfPrinting 1.2.0

C# PDF Printing

API which uses Windows.Data.Pdf from C# to print a PDF file.

No third party apps required - no additional licenses. Only Windows.

PDF's are printed as vector. Text and fonts are preserved. Desktop and WinRT apps.

Key steps

1. Ensure project specifies a windows version in csproj: <TargetFramework>net7.0-windows10.0.22621.0</TargetFramework>
2. Add NuGet package Rmg.WinRTPdfPrinter
3. Create a PdfPrinter and call Print
4. There is no step 4

Example (Program.cs):

var pdfPrinter = new PdfPrinter();
await pdfPrinter.Print(printerName, pdfPath);

Convert to XPS

You can also use this to convert a PDF to XPS:

var pdfPrinter = new PdfPrinter();
await pdfPrinter.ConvertToXps("input.pdf", "output.xps");

Convert to Tiff

You can also use this to convert a PDF to Tiff:

var pdfPrinter = new PdfPrinter();
await pdfPrinter.ConvertToTiff("input.pdf", "output.tiff");

By default, a color, opaque, 300dpi, ZIP compressed multipage tiff will result. These settings can be adjusted with TiffConversionOptions:

// Produce a fax-style 1bpp TIFF
await pdfPrinter.ConvertToTiff("input.pdf", "output.tiff", new (Dpi: 150, ColorMode: TiffColorMode.BlackAndWhite);

// Produce a transparent background RGBA tiff
await pdfPrinter.ConvertToTiff("input.pdf", "output.tiff, new (FillBackground: false));

Convert to PDF/JPEG/GIF/etc...

You don't need this library if you are only working with a single page at a time. The PdfPage.RenderToStreamAsync method allows you to specify a bitmap encoder and rects:

var pdfFile = await StorageFile.GetFileFromPathAsync(@"C:\drop\example.pdf");
var pdfDoc = await PdfDocument.LoadFromFileAsync(pdfFile);
var outDir = await StorageFolder.GetFolderFromPathAsync(@"C:\drop\");

for (uint pageIndex = 0; pageIndex < pdfDoc.PageCount; pageIndex++)
{
    var pdfPage = pdfDoc.GetPage(pageIndex);
    
    var pngFile = await outDir.CreateFileAsync($"page-{pageIndex}.png", CreationCollisionOption.ReplaceExisting);
    using var pngStream = await pngFile.OpenAsync(FileAccessMode.ReadWrite);
    var options = new PdfPageRenderOptions();
    options.BitmapEncoderId = BitmapEncoder.PngEncoderId;
    // optionally specify source rectangle or dimensions
    await pdfPage.RenderToStreamAsync(pngStream, options);
}

Future possibilites

• WPF viewer control
• netframework support
• Earlier revisions of netcore