Upload file on ASP.Net Core returns empty Request.Form.Files, only on React

Question

My Html

<form method="post" action="/Upload" enctype="multipart/form-data">
  <input type="file" name="files" multiple />
  <input type="submit" value="Upload" class="btn" />
</form>

My Action

[HttpPost("/Upload")]
public async Task<IActionResult> Upload(){
    var files = Request.Form.Files;
    ...
}

This work as expected when loaded directly from my Html View, but if i load the exactly same Html using React:

render(){
  return(
  <form method="post" action="/Upload" enctype="multipart/form-data">
    <input type="file" name="files" multiple />
    <input type="submit" value="Upload" className="btn" />
  </form>
  );
}

The post request works, but 'var files' is always a empty array.

Any idea whats wrong? Thank you all in advance

Answer 1

您应该使用ICollection<IFormFile> files或IFormFile file来处理asp.net核心中的文件。