Web API Save as PDF - asp.net-web-api

Question

I have a Web API used to save some generated PDFs.
I use the following code:
[HttpPut]
[Route("getfile")]
public HttpResponseMessage GenerateFile(RequestView requestView)
{
var result = new HttpResponseMessage(HttpStatusCode.OK);
using (var stream = new FileStream(#"C:\sample.pdf", FileMode.Open) { Position = 0 })
{
result.Content = new StreamContent(stream);
MemoryStream ms = new MemoryStream();
stream.CopyTo(ms);
result.Content = new ByteArrayContent(ms.ToArray());
result.Content.Headers.ContentDisposition = new System.Net.Http.Headers.ContentDispositionHeaderValue("attachment") { FileName = "Sample.pdf" };
result.Content.Headers.ContentType = new System.Net.Http.Headers.MediaTypeHeaderValue("application/pdf");
result.Content.Headers.ContentDisposition.FileName = "Sample.pdf";
result.Content.Headers.ContentLength = stream.Length;
}
return result;
}
But what i get is:
The response looks like:
%PDF-1.3
%âãÏÓ
1 0 obj
<<
/Type /Catalog
/Outlines 2 0 R
/Pages 3 0 R
>>
endobj
2 0 obj
<<
/Type /Outlines
/Count 0
>>
endobj
.
.
.
And the headers:
Does anyone have any clues related to this?
Thanks.

Answer 1

Set response content to ByteArrayContent instead of StreamContent, Also make sure to add .pdf extention to result.Content.Headers.ContentDisposition.FileName = "Sample.pdf";
[HttpPut]
[Route("getfile")]
public HttpResponseMessage GenerateFile(RequestView requestView)
{
var result = new HttpResponseMessage(HttpStatusCode.OK);
using (var stream = new FileStream(#"C:\sample.pdf", FileMode.Open) { Position = 0 })
{
result.Content = new StreamContent(stream);
MemoryStream ms = new MemoryStream();
stream.CopyTo(ms);
result.Content = new ByteArrayContent(ms.ToArray());
result.Content.Headers.ContentDisposition = new System.Net.Http.Headers.ContentDispositionHeaderValue("attachment") { FileName = "Sample.pdf" };
result.Content.Headers.ContentType = new System.Net.Http.Headers.MediaTypeHeaderValue("application/pdf");
result.Content.Headers.ContentDisposition.FileName = "Sample.pdf";
result.Content.Headers.ContentLength = stream.Length;
}
return result;
}

Answer 2

Couple of things I notice: one is that you're setting the content length. This shouldn't be required and I'd remove it.
Secondly, you don't provide FileStream constructor parameters for things like FileAccess. I'd replace that with this, which should achieve what you need:
var stream = File.OpenRead(#"D:\sample.pdf");