Dealing with large file uploads on ASP.NET Core 1.0

Question

When I\'m uploading large files to my web api in ASP.NET Core, the runtime will load the file into memory before my function for processing and storing the upload is fired.

Answer 1

In your Controller you can simply use Request.Form.Files to access the files:

[HttpPost("upload")]
public async Task UploadAsync(CancellationToken cancellationToken)
{
    if (!Request.HasFormContentType)
        return BadRequest();

    var form = Request.Form;
    foreach(var formFile in form.Files)
    {
        using(var readStream = formFile.OpenReadStream())
        {
            // Do something with the uploaded file
        }
    }


    return Ok();
}