Reading a PDF document as part of the while specifying which PDF to render

Question

Expanding on this question, I'm struggling to work out how I can specify which PDF I'm reading.

I'm creating my PDF with WkHtmlToPdf which generates the PDF file. I'm then saving the PDF bytes to my database and I want to read it out again to display it on the View:

public void GetPDF(int id)
{
    // get the byte array for the PDF out of the database
    var Pdf = db.Invoices.FirstOrDefault(x => x.Id == id).Document;

    //FileStream Stream = new FileStream(filePath, FileMode.Open, FileAccess.Read);
    //return File(Stream, "application/pdf");

    // this code reads from a file but I need to read the byte array
    // back out so that it displays as a PDF
}

On my View, I'm doing this as per the answer in the linked question:

<object data='@Url.Action("GetPDF")'></object>

How do I pass in the Invoice ID parameter into the GetPDF method?

Is there a better way to do this?

Has this question been resolved? – Nkosi Jun 17 '16 at 11:31 — Nkosi, Jun 17 '16 at 11:31

score 2 · Answer 1 · answered Jun 13 '16 at 12:00

2

@Url.Action("GetPDF", new { id = 1 })

answered Jun 13 '16 at 12:00

Rosdi Kasim

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I really should have thought about that but I guess I was overcomplicating as usual ^^ – Ortund Jun 13 '16 at 12:02

Nkosi · Answer 2 · 2016-06-13T12:44:16.087

Here is how to read the byte array back out so that it displays as a PDF

public ActionResult GetPDF(int id) {
    // get the byte array for the PDF out of the database
    var Pdf = db.Invoices.FirstOrDefault(x => x.Id == id).Document;
    // return Pdf content
    return File(Pdf, "application/pdf");    
}

Controller.File has an overloaded method that takes a byte[] of the file content to be returned. So return the result of passing the byte array to that method.

And @RosdiKasim already showed you how to call the action with the id from the view

@Url.Action("GetPDF", new { id = 1 })

Reading a PDF document as part of the while specifying which PDF to render

2 Answers2