.NET MVC FileResult equivalent in Web Forms

I’m using FileResult as a return value for a function in MVC that returns a PDF file.

What return type should I use in Web Forms?

Thanks

public FileResult PrintPDFVoucher(object sender, EventArgs e)
    {
        PdfDocument outputDoc = new PdfDocument();
        PdfDocument pdfDoc = PdfReader.Open(
            Server.MapPath(ConfigurationManager.AppSettings["Template"]),
            PdfDocumentOpenMode.Import
        );

        MemoryStream memory = new MemoryStream();

        try
        {
            //Add pages to the import document
            int pageCount = pdfDoc.PageCount;
            for (int i = 0; i < pageCount; i++)
            {
                PdfPage page = pdfDoc.Pages[i];
                outputDoc.AddPage(page);
            }
            //Target specifix page
            PdfPage pdfPage = outputDoc.Pages[0];

            XGraphics gfxs = XGraphics.FromPdfPage(pdfPage);
            XFont bodyFont = new XFont("Arial", 10, XFontStyle.Regular);


            //Save 
            outputDoc.Save(memory, true);
            gfxs.Dispose();
            pdfPage.Close();
        }
        finally
        {
            outputDoc.Close();
            outputDoc.Dispose();
        }

        var result = new FileContentResult(memory.GetBuffer(), "text/pdf");
        result.FileDownloadName = "file.pdf";
        return result;
    }

Answers:

Thank you for visiting the Q&A section on Magenaut. Please note that all the answers may not help you solve the issue immediately. So please treat them as advisements. If you found the post helpful (or not), leave a comment & I’ll get back to you as soon as possible.

Method 1

In ASP.NET Webforms you’ll need to write the file to the Response stream manually. There is no result abstraction in webforms.

  Response.ContentType = "Application/pdf";      
  //Write the generated file directly to the response stream
  Response.BinaryWrite(memory);//Response.WriteFile(FilePath); if you have a physical file you want them to download
  Response.End();

This code is not tested, but this should get you in the general direction.

Method 2

Classic ASP.NET doesn’t have the idea of a return type. The way to approach this would be to create an custom .ashx page/handler to serve up the file.

Your code behind for this file should look something similar to:

public class Download : IHttpHandler 
{
    public void ProcessRequest (HttpContext context) 
    {
        PdfDocument outputDoc = new PdfDocument();
        PdfDocument pdfDoc = PdfReader.Open(
            Server.MapPath(ConfigurationManager.AppSettings["Template"]),
            PdfDocumentOpenMode.Import
        );

        MemoryStream memory = new MemoryStream();

        try
        {
            //Add pages to the import document
            int pageCount = pdfDoc.PageCount;
            for (int i = 0; i < pageCount; i++)
            {
                PdfPage page = pdfDoc.Pages[i];
                outputDoc.AddPage(page);
            }
            //Target specifix page
            PdfPage pdfPage = outputDoc.Pages[0];

            XGraphics gfxs = XGraphics.FromPdfPage(pdfPage);
            XFont bodyFont = new XFont("Arial", 10, XFontStyle.Regular);


            //Save 
            Response.ContentType = ""text/pdf"";
            Response.AppendHeader("Content-Disposition","attachment; filename=File.pdf");

            outputDoc.Save(Response.OutputStream, true);

            gfxs.Dispose();
            pdfPage.Close();
        }
        finally
        {
            outputDoc.Close();
            outputDoc.Dispose();
        }
    }

    public bool IsReusable
    {
        get 
        {
               return false;
        }
    }
}

All methods was sourced from stackoverflow.com or stackexchange.com, is licensed under cc by-sa 2.5, cc by-sa 3.0 and cc by-sa 4.0