How to correctly download files to Angular from ASP.NET Core?

Question

I have a file on the server that I want to send to the client:

[HttpPost]
public IActionResult Test()
{
    byte[] bytes = System.IO.File.ReadAllBytes(Path.C         


        

Answer 1

I do not know why the option specified in the question does not work. But I found a solution, so to say "in another forest". I'm not very versed, so I'll just describe the process of solving the problem. For the beginning I will immediately say that the problem was on the client's side. The method on the server worked correctly from the start. I decided to use another method to download the files "fetch". And came across the next post in the forum. From there I took the following answer

this.httpClient
    .fetch(url, {method, body, headers})
    .then(response => response.blob())
    .then(blob => URL.createObjectURL(blob))
    .then(url => {
        window.open(url, '_blank');
        URL.revokeObjectURL(url);
    });

He did not work for me either. I changed it so

    fetch(url, {
            method: 'POST',
            headers: this.headers()
        })
        .then(response => response.blob())
        .then(blob => URL.createObjectURL(blob))
        .then(url => {
            window.open(url, '_blank');
        });

Because of this line nothing happened

URL.revokeObjectURL(url);

This option worked, but with screwed. He saved the file with a strange name and no extension. Then I changed it so.

    fetch(url, {
            method: 'POST',
            headers: this.headers()
        })
            .then(response => response.blob())
            .then(blob => URL.createObjectURL(blob))
            .then(url => {
                var link = document.createElement("a");
                link.setAttribute("href", url);
                link.setAttribute("download", "test.docx");
                link.style.display = "none";
                document.body.appendChild(link);
                link.click();
                document.body.removeChild(link);
            });

And it works! I apologize for the English. I'm using Google translator