You are adding a StreamContent
as a part to the empty MultipartFormDataContent
. Naturally, ReadAsMultipartAsync
then does nothing. Instead, you want to read the StreamContent
. Also, your file contains not just the content, but the headers as well. If you snip off the headers, this ought to work:
using (var stream = File.Open (@"C:\temp\test.txt", FileMode.Open))
{
// note: StreamContent has no Content-Type set by default
// set a suitable Content-Type for ReadAsMultipartAsync()
var content = new StreamContent (stream) ;
content.Headers.ContentType =
System.Net.Http.Headers.MediaTypeHeaderValue.Parse (
"multipart/related; boundary=cbsms-main-boundary") ;
// TODO: make this recursive if required...
var outerMultipart = await stream.ReadAsMultipartAsync () ;
foreach (var outerPart in outerMultipart.Contents)
{
if (outerPart.IsMimeMultipartContent())
{
var innerMultipart = await outerPart.ReadAsMultipartAsync () ;
foreach (var innerPart in innerMultipart.Contents) // do stuff
}
else // do other stuff
}
}