.NET Core P/Invoke wrapper for wkhtmltopdf library that uses Webkit engine to convert HTML pages to PDF.
Library can be installed through Nuget. Run command bellow from the package manager console:
PM> Install-Package DinkToPdf
Copy native library to root folder of your project. From there .NET Core loads native library when native method is called with P/Invoke. You can find latest version of native library here. Select appropriate library for your OS and platform (64 or 32 bit).
Library was NOT tested with IIS. Library was tested in console applications and with Kestrel web server both for Web Application and Web API .
Use this converter in single threaded applications.
Create converter:
var converter = new BasicConverter(new PdfTools());Use this converter in multi threaded applications and web servers. Conversion tasks are saved to blocking collection and executed on a single thread.
var converter = new SynchronizedConverter(new PdfTools());var doc = new HtmlToPdfDocument()
{
GlobalSettings = {
ColorMode = ColorMode.Color,
Orientation = Orientation.Landscape,
PaperSize = PaperKind.A4Plus,
},
Objects = {
new ObjectSettings() {
PagesCount = true,
HtmlContent = @"Lorem ipsum dolor sit amet, consectetur adipiscing elit. In consectetur mauris eget ultrices iaculis. Ut odio viverra, molestie lectus nec, venenatis turpis.",
WebSettings = { DefaultEncoding = "utf-8" },
HeaderSettings = { FontSize = 9, Right = "Page [page] of [toPage]", Line = true, Spacing = 2.812 }
}
}
};If Out property is empty string (defined in GlobalSettings) result is saved in byte array.
byte[] pdf = converter.Convert(doc);If Out property is defined in document then file is saved to disk:
var doc = new HtmlToPdfDocument()
{
GlobalSettings = {
ColorMode = ColorMode.Color,
Orientation = Orientation.Portrait,
PaperSize = PaperKind.A4,
Margins = new MarginSettings() { Top = 10 },
Out = @"C:\DinkToPdf\src\DinkToPdf.TestThreadSafe\test.pdf",
},
Objects = {
new ObjectSettings()
{
Page = "http://google.com/",
},
}
};converter.Convert(doc);Converter must be registered as singleton.
public void ConfigureServices(IServiceCollection services)
{
// Add converter to DI
services.AddSingleton(typeof(IConverter), new SynchronizedConverter(new PdfTools()));
}