gistfile1.txt

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Codaxy.WkHtmlToPdf;
using Nancy;
using Nancy.Responses;
using System.Diagnostics;
using System.Drawing.Printing;

namespace HtmlToPrinter
{
    public class HelloModule : NancyModule
    {
        public HelloModule()
        {
           
                Get["/{url}/{printer}", runAsync: true] = async (parameters, ct) =>
            {
                try
                {
                    var fileName = Path.GetRandomFileName() + ".pdf";
                    PdfDocument doc = new PdfDocument
                    {
                        Url =  parameters.url,
                        HeaderLeft = "[title]",
                        HeaderRight = "[date] [time]",
                        FooterCenter = "Page [page] of [topage]"
                    };

                    PdfOutput pdf = new PdfOutput
                    {
                        // OutputFilePath = "wkhtmltopdf-page.pdf"
                        OutputFilePath = fileName
                    };
                    PdfConvert.ConvertHtmlToPdf(doc, pdf);

                    SendToPrinter(fileName, parameters.printer);
                   // File.Delete(fileName);
                    return "OK";
                }
                catch
                {
                    return "Error";
                }
              
               
            };
        }

        private void SendToPrinter(string fileName, string printer)
        {
            Process proc = new Process();
            proc.StartInfo.WindowStyle = ProcessWindowStyle.Hidden;
            proc.StartInfo.Verb = "print";
            proc.StartInfo.FileName = @"SumatraPDF.exe";
            proc.StartInfo.Arguments = string.Format(@"-print-to {0} -silent {1}", "\"" + printer + "\"", "\"" + fileName + "\"");
            proc.StartInfo.UseShellExecute = false;
            proc.StartInfo.CreateNoWindow = true;
            proc.Start();
            proc.StartInfo.WindowStyle = ProcessWindowStyle.Hidden;
            if (proc.HasExited == false)
            {
                proc.WaitForExit(10000);
            }
            proc.EnableRaisingEvents = true;
            proc.CloseMainWindow();
            proc.Close();
        }
    }
}