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copied!<p><strong>Update:</strong><br> My answer below, creates the pdf file on the disk. I then streamed that file to the users browser as a download. Consider using something like Hath's answer below to get wkhtml2pdf to output to a stream instead and then send that directly to the user - that will bypass lots of issues with file permissions etc.</p> <p><strong>My original answer:</strong><br> Make sure you've specified an output path for the PDF that is writeable by the ASP.NET process of IIS running on your server (usually NETWORK_SERVICE I think).</p> <p>Mine looks like this (and it works):</p> <pre><code>/// <summary> /// Convert Html page at a given URL to a PDF file using open-source tool wkhtml2pdf /// </summary> /// <param name="Url"></param> /// <param name="outputFilename"></param> /// <returns></returns> public static bool HtmlToPdf(string Url, string outputFilename) { // assemble destination PDF file name string filename = ConfigurationManager.AppSettings["ExportFilePath"] + "\\" + outputFilename + ".pdf"; // get proj no for header Project project = new Project(int.Parse(outputFilename)); var p = new System.Diagnostics.Process(); p.StartInfo.FileName = ConfigurationManager.AppSettings["HtmlToPdfExePath"]; string switches = "--print-media-type "; switches += "--margin-top 4mm --margin-bottom 4mm --margin-right 0mm --margin-left 0mm "; switches += "--page-size A4 "; switches += "--no-background "; switches += "--redirect-delay 100"; p.StartInfo.Arguments = switches + " " + Url + " " + filename; p.StartInfo.UseShellExecute = false; // needs to be false in order to redirect output p.StartInfo.RedirectStandardOutput = true; p.StartInfo.RedirectStandardError = true; p.StartInfo.RedirectStandardInput = true; // redirect all 3, as it should be all 3 or none p.StartInfo.WorkingDirectory = StripFilenameFromFullPath(p.StartInfo.FileName); p.Start(); // read the output here... string output = p.StandardOutput.ReadToEnd(); // ...then wait n milliseconds for exit (as after exit, it can't read the output) p.WaitForExit(60000); // read the exit code, close process int returnCode = p.ExitCode; p.Close(); // if 0 or 2, it worked (not sure about other values, I want a better way to confirm this) return (returnCode == 0 || returnCode == 2); } </code></pre>

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