Return PDF to the Browser using ASP.NET Core

Question

I created the Wep API in ASP.Net core to return the PDF. Here is my code:

public HttpResponseMessage Get(int id)
{
    var response = new HttpResponseMessage         


        

Answer 1

I couldn't comment the answer by CodeCaster since my reputation isn't high enough. When trying

public IActionResult Get(int id)
{
    using (var stream = new FileStream(@"path\to\file", FileMode.Open))
    {
        return File(stream, "application/pdf", "FileDownloadName.ext");
    }       
} 

we got a

ObjectDisposedException: Cannot access a disposed object. Object name: 'Cannot access a closed file.'. System.IO.FileStream.BeginRead(byte[] array, int offset, int numBytes, AsyncCallback callback, object state)

We removed the using

   [HttpGet]
   [Route("getImageFile")]
   public IActionResult GetWorkbook()
   {
        var stream = new FileStream(@"pathToFile", FileMode.Open);
        return File(stream, "image/png", "image.png");
   }

And that worked. This is ASP.NET Core 2.1 running in IIS Express.