tmakin/ExportPdf.cs

## readme.md

      
    Raw
  

              readme.md
            
          
    Notes


This sample is based around Haukcode.DinkToPdf which is a fork of https://github.com/rdvojmoc/DinkToPdf
https://www.nuget.org/packages/Haukcode.DinkToPdf/


Note that you need to include the correct libwkhtmltox for your platform. See links in the repos above.


Tested on Azure Functions v3 running on a Standard Windows App Service Plan. Last time I checked concumption plans were not supported because the don't support GDI+.


Testing

To test this function in the azure portal you simply need to post some HTML in the request body. For example:
<!DOCTYPE html>
<html>
<head><meta charset='UTF-8'>
<title>Title</title>
</head>
<body>Body text...</body>
</html>

History

28/04/2020: Updated for azure functions v3 using a different nuget package

  
## ExportPdf.cs
using System.Net;
using System.Net.Http;
using System.Net.Http.Headers;
using System.Threading.Tasks;
using DinkToPdf;
using Microsoft.AspNetCore.Http;
using Microsoft.Azure.WebJobs;
using Microsoft.Azure.WebJobs.Extensions.Http;
using Microsoft.Extensions.Logging;
using IPdfConverter = DinkToPdf.Contracts.IConverter;

namespace ExportFunctionApp
{
    public static class ExportPdf
    {
        private static readonly IPdfConverter _pdfConverter = new SynchronizedConverter(new PdfTools());

        [FunctionName("ExportPdf")]
        public static async Task<HttpResponseMessage> Run(
            [HttpTrigger(AuthorizationLevel.Function, "post")] HttpRequest req,
            ILogger log)
        {
            log.LogInformation("Processing PDF Request");

            string html = await req.ReadAsStringAsync();

            var pdf = BuildPdf(html);

            log.LogInformation($"PDF Generated. Length={pdf.Length}");

            var res = new HttpResponseMessage(HttpStatusCode.OK)
            {
                Content = new ByteArrayContent(pdf)
            };

            res.Content.Headers.ContentType = new MediaTypeHeaderValue("application/pdf");
            res.Content.Headers.ContentDisposition = new ContentDispositionHeaderValue("inline");

            return res;
        }

        private static byte[] BuildPdf(string html)
        {
            const double margin = 25;

            return _pdfConverter.Convert(new HtmlToPdfDocument()
            {
                GlobalSettings = {
                    Orientation = Orientation.Portrait,
                    PaperSize = PaperKind.A4,
                    Margins = new MarginSettings(margin, margin, margin, margin),
                },
                Objects =
                {
                    new ObjectSettings
                    {
                        WebSettings = new WebSettings
                        {
                            PrintMediaType = true,
                            EnableIntelligentShrinking = true
                        },
                        HtmlContent = html
                    }
                }
            });
        }
    }
}
	using System.Net;
	using System.Net.Http;
	using System.Net.Http.Headers;
	using System.Threading.Tasks;
	using DinkToPdf;
	using Microsoft.AspNetCore.Http;
	using Microsoft.Azure.WebJobs;
	using Microsoft.Azure.WebJobs.Extensions.Http;
	using Microsoft.Extensions.Logging;
	using IPdfConverter = DinkToPdf.Contracts.IConverter;

	namespace ExportFunctionApp
	{
	public static class ExportPdf
	{
	private static readonly IPdfConverter _pdfConverter = new SynchronizedConverter(new PdfTools());

	[FunctionName("ExportPdf")]
	public static async Task<HttpResponseMessage> Run(
	[HttpTrigger(AuthorizationLevel.Function, "post")] HttpRequest req,
	ILogger log)
	{
	log.LogInformation("Processing PDF Request");

	string html = await req.ReadAsStringAsync();

	var pdf = BuildPdf(html);

	log.LogInformation($"PDF Generated. Length={pdf.Length}");

	var res = new HttpResponseMessage(HttpStatusCode.OK)
	{
	Content = new ByteArrayContent(pdf)
	};

	res.Content.Headers.ContentType = new MediaTypeHeaderValue("application/pdf");
	res.Content.Headers.ContentDisposition = new ContentDispositionHeaderValue("inline");

	return res;
	}

	private static byte[] BuildPdf(string html)
	{
	const double margin = 25;

	return _pdfConverter.Convert(new HtmlToPdfDocument()
	{
	GlobalSettings = {
	Orientation = Orientation.Portrait,
	PaperSize = PaperKind.A4,
	Margins = new MarginSettings(margin, margin, margin, margin),
	},
	Objects =
	{
	new ObjectSettings
	{
	WebSettings = new WebSettings
	{
	PrintMediaType = true,
	EnableIntelligentShrinking = true
	},
	HtmlContent = html
	}
	}
	});
	}
	}
	}