How to get ControllerContext to build PDF using Rotativa in BackgroundJob with Hangfire

Question

I have to send mails in my background application, for this I use Hangfire, but I have to attach a document to each mail with its recipient, the information of the document to be attached is in a table that I convert with rotativa.

My concern is when I want to convert the document into byte[] I always get that the HttpContext is null, obviously because there is no HTTP request which triggers the action while everything is in the background.

Here is my actual code:

var Avis_views = new ViewAsPdf("~/Views/AvisAutomatique/ExportPdfDebit.cshtml", printa)
{
    PageMargins = new Rotativa.Options.Margins(0, 0, 0, 0),
    MinimumFontSize = 14,
    /*ageHeight=60,*/
    PageOrientation = Rotativa.Options.Orientation.Portrait,
    PageSize = Rotativa.Options.Size.A4,
};

var fileName = "DEBITADVISE_" + Numcpt + "_" + _GetTransDateTime() + ".pdf";
//var path = Path.Combine(@"C:\DocumentPdf\", fileName);
byte[] abc =  Avis_views.BuildFile(quotesController.ControllerContext);
//System.IO.File.WriteAllBytes(path, abc);
MemoryStream ms = new MemoryStream(abc);

sendemail(email, fileName, abc, emailc);

Can someone can help me initialize the httpcontext from my controller?

Answer 1

after some week with trying with rotativa i fund another solution with Itextsharp bellow how i did: 1-first all installing the package ItextSharp and ItextSharp XMLWorker
2- i designed my template in html page with the css put them in a
folder(@"C:\Templates\Credit.html"; @"C:\Templates\pdfview.css";)
3-read the html and the css with this methode

public string RenderViewToString(string viewPath)
    {
        var file = new FileInfo(viewPath);
        using (StreamReader streamReader = file.OpenText())
        {
            string viewLine = "";
            var result = string.Empty;
            while ((viewLine = streamReader.ReadLine()) != null)
            {
                result = result + viewLine;
            }
            return result;
        }
    }

and use this methode to convert to pdf:

 public byte[] GetPDF(string param1,string param2,etc...)
    {
        
        byte[] bPDF = null;
        try
        {
            pHTML = pHTML.Replace("{{parameter form the html file}}", param1);
            pHTML = pHTML.Replace("{{parameter form the html file}}", param2);
            
            MemoryStream ms = new MemoryStream();
            TextReader txtReader = new StringReader(pHTML.ToString());

            
            var image = @"C:\Templates\avis.jpg";
            iTextSharp.text.Image jpg = iTextSharp.text.Image.GetInstance(image);
            jpg.SpacingBefore = 10f;
            jpg.ScaleToFit(50, 50);
            jpg.Alignment =iTextSharp.text.Image.ALIGN_RIGHT;
           

            
            doc.Open();
            doc.Add(jpg);
            using (var cssMemoryStream = new MemoryStream(System.Text.Encoding.UTF8.GetBytes(csstemp)))
            {
                using (var htmlMemoryStream = new MemoryStream(System.Text.Encoding.UTF8.GetBytes(pHTML)))
                {
                    XMLWorkerHelper.GetInstance().ParseXHtml(oPdfWriter, doc, htmlMemoryStream, cssMemoryStream);
                }
            }
            //htmlWorker.StartDocument();
            //// 5: parse the html into the document  
            //htmlWorker.Parse(txtReader);

            //// 6: close the document and the worker  
            //htmlWorker.EndDocument();

            //htmlWorker.Close();
            doc.Close();

            bPDF = ms.ToArray();

            return bPDF;
        }
        catch (Exception ex)
        {
            var mess = ex.StackTrace;
            var mess2 = ex.Message;
        }

        return bPDF;


    }

Thanks your hope that will help someone