public static string Upload(string url, UploadFile[] files, NameValueCollection form)
{
var resp = Upload((HttpWebRequest)WebRequest.Create(url), files, form);
using (var s = resp.GetResponseStream())
using (var sr = new StreamReader(s))
{
return sr.ReadToEnd();
}
}
public static HttpWebResponse Upload(HttpWebRequest req, UploadFile[] files, NameValueCollection form)
{
var mimeParts = new List<MimePart>();
try
{
foreach (var key in form.AllKeys)
{
var part = new StringMimePart();
part.Headers["Content-Disposition"] = "form-data; name=\"" + key + "\"";
part.StringData = form[key];
mimeParts.Add(part);
}
var nameIndex = 0;
foreach (var file in files)
{
var part = new StreamMimePart();
if (string.IsNullOrEmpty(file.FieldName))
file.FieldName = "file" + nameIndex++;
part.Headers["Content-Disposition"] = "form-data; name=\"" + file.FieldName + "\"; filename=\"" + file.FileName + "\"";
part.Headers["Content-Type"] = file.ContentType;
part.SetStream(file.Data);
mimeParts.Add(part);
}
var boundary = "----------" + DateTime.Now.Ticks.ToString("x");
req.ContentType = "multipart/form-data; boundary=" + boundary;
req.Method = "POST";
long contentLength = 0;
var footer = Encoding.UTF8.GetBytes("--" + boundary + "--\r\n");
foreach (var part in mimeParts)
{
contentLength += part.GenerateHeaderFooterData(boundary);
}
req.ContentLength = contentLength + footer.Length;
var buffer = new byte[512*1024];
var afterFile = Encoding.UTF8.GetBytes("\r\n");
using (var s = req.GetRequestStream())
{
foreach (var part in mimeParts)
{
s.Write(part.Header, 0, part.Header.Length);
int read;
while ((read = part.Data.Read(buffer, 0, buffer.Length)) > 0)
s.Write(buffer, 0, read);
part.Data.Dispose();
s.Write(afterFile, 0, afterFile.Length);
}
s.Write(footer, 0, footer.Length);
}
return (HttpWebResponse)req.GetResponse();
}
catch
{
foreach (var part in mimeParts)
if (part.Data != null)
part.Data.Dispose();
throw;
}
}
