download a file from server using a controller and javascript

Question

I have the controller code below:

public FileResult DownloadFileParaView()
{
    byte[] fileBytes = System.IO.File.ReadAllBytes(@"MyPath");
    string fileName = "MyFileName";
    return File(fileBytes, System.Net.Mime.MediaTypeNames.Application.Octet, fileName);
}

How can I call it from JavaScript to return my file? Does I have to copy the file to project content?

Are you trying to trigger a download prompt, or just return a file for your JavaScript code to interpret in some fashion? — Tieson T.
– Tieson T., Commented Feb 5, 2020 at 22:21
I just want to open the typical download window where client can save the file to his PC — Gugalaxia
– Gugalaxia, Commented Feb 5, 2020 at 22:22
This is an HTTP endpoint, so call it like you would any other HTTP endpoint. — user47589
– user47589, Commented Feb 5, 2020 at 22:22

Tieson T. · Accepted Answer · 2020-02-05 22:30:11Z

1

Assuming you're calling this from within a view, it's relatively simple:

window.location.href = '@Url.Action("DownloadFileParaView")';

This would be in a script tag within the view where you want to trigger the download.

answered Feb 5, 2020 at 22:30

Tieson T.

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