DART post with multipart/form-data

Question

in DART lang, how to specify POST request Content-Type to be

multipart/form-data

My DART code is:

Answer 1

I think you should use HttpRequest.postFormData(url, data) here. Then you can use the following:

FormData data = new FormData(); // from dart:html

data.append(key, value);

HttpRequest.request('/upload', method: 'POST', sendData: data).then((HttpRequest r) {
  // ...
});

Regards, Robert