如何在ASP.Net Core 2中返回CSV文件？

Question

Ok, I thought I had this working, but... no. :)

So I am simply trying to return a CSV file from my .Net Core 2 Web API. Each time I do this I get a 406 status code...

Here is my code.

    [HttpGet]
    [Route("/progress/data.csv")]
    [Produces("text/csv")]
    public IActionResult GetCSV()
    {
        try
        {
            return Ok("1,2,3");
        }
        catch (Exception ex)
        {
            HandleError(ex);
            return BadRequest(ex);
        }
    }

I keep thinking I need to add a formatter or something in my Startup.cs file, but that hasn't worked either.

Seems like this should be a simple request, but I am finding the interwebs sparse on this topic.

Thanks!

Answer 1

Something like this should work:

StringBuilder sb = new StringBuilder();
sb.AppendLine("1;2;3;");
return File(System.Text.Encoding.ASCII.GetBytes(sb.ToString()), "text/csv", "data.csv");