Return PDF to WebPage from ASHX

Question

I have a web page with a \"download\" link on it.

Using jQuery I do an Ajax Get to a ASHX file.

In the ASHX I get the Stream of the file. I then convert the

Answer 1

Through use of context.Response.TransmitFile, a more concise way to serve a PDF from an ashx web handler is:

context.Response.Clear();
context.Response.ContentType = "application/pdf";
string filePath = System.Web.HttpContext.Current.Server.MapPath(@"~\path-to\your-file.pdf");
context.Response.TransmitFile(filePath);

Answer 2

Try this (do not use .get):

window.open('/UserControls/download.ashx?format=pdf&bookId=' + bookId, "pdfViewer");

To prevent the "File does not begin with '%PDF" error, use Response.BinaryWrite:

context.Response.Clear(); 
context.Response.ClearContent(); 
context.Response.ClearHeaders(); 
context.Response.ContentType = "application/pdf";

Stream fileStream = publishBookManager.GetFile(documentId);
byte[] buffer = new byte[16 * 1024];
using (MemoryStream ms = new MemoryStream())
{
  int read;
  while ((read = fileStream.Read(buffer, 0, buffer.Length)) > 0)
  {
    ms.Write(buffer, 0, read);
  }
}

context.Response.BinaryWrite(data); 
context.Response.Flush();   

Answer 3

i am also using window.open for getting the pdf. but it is always displayed while try to use same URL through address bar directly without logged in. how to solve this one.