method
postFormData

Future<HttpRequest> postFormData(
String url,
Map<String,String> data,
{bool withCredentials,
String responseType,
Map<String,String> requestHeaders,
void onProgress(ProgressEvent e)}
)

Makes a server POST request with the specified data encoded as form data.

This is roughly the POST equivalent of getString. This method is similar to sending a FormData object with broader browser support but limited to String values.

If data is supplied, the key/value pairs are URI encoded with Uri.encodeQueryComponent and converted into an HTTP query string.

Unless otherwise specified, this method appends the following header:

Content-Type: application/x-www-form-urlencoded; charset=UTF-8

Here's an example of using this method:

var data = { 'firstName' : 'John', 'lastName' : 'Doe' };
HttpRequest.postFormData('/send', data).then((HttpRequest resp) {
  // Do something with the response.
});

See also: