System.Web.HttpMultipart.ReadNextElement C# (CSharp) Method

		public Element ReadNextElement ()
		{
			if (at_eof || ReadBoundary ())
				return null;

			Element elem = new Element ();
			string header;
			while ((header = ReadHeaders ()) != null) {
				if (StrUtils.StartsWith (header, "Content-Disposition:", true)) {
					elem.Name = GetContentDispositionAttribute (header, "name");
					elem.Filename = StripPath (GetContentDispositionAttributeWithEncoding (header, "filename"));
				} else if (StrUtils.StartsWith (header, "Content-Type:", true)) {
					elem.ContentType = header.Substring ("Content-Type:".Length).Trim ();
				}
			}

			long start = data.Position;
			elem.Start = start;
			long pos = MoveToNextBoundary ();
			if (pos == -1)
				return null;

			elem.Length = pos - start;
			return elem;
		}

        async Task LoadMultiPart()
        {
            string boundary = GetParameter(ContentType, "; boundary=");
            if (boundary == null)
                return;

            using (var requestStream = GetSubStream(InputStream))
            {
                //DB: 30/01/11 - Hack to get around non-seekable stream and received HTTP request
                //Not ending with \r\n?
                var ms = new MemoryStream(32 * 1024);
                await requestStream.CopyToAsync(ms).ConfigureAwait(false);

                var input = ms;
                ms.WriteByte((byte)'\r');
                ms.WriteByte((byte)'\n');

                input.Position = 0;

                //Uncomment to debug
                //var content = new StreamReader(ms).ReadToEnd();
                //Console.WriteLine(boundary + "::" + content);
                //input.Position = 0;

                var multi_part = new HttpMultipart(input, boundary, ContentEncoding);

                HttpMultipart.Element e;
                while ((e = multi_part.ReadNextElement()) != null)
                {
                    if (e.Filename == null)
                    {
                        byte[] copy = new byte[e.Length];

                        input.Position = e.Start;
                        input.Read(copy, 0, (int)e.Length);

                        form.Add(e.Name, (e.Encoding ?? ContentEncoding).GetString(copy));
                    }
                    else
                    {
                        //
                        // We use a substream, as in 2.x we will support large uploads streamed to disk,
                        //
                        HttpPostedFile sub = new HttpPostedFile(e.Filename, e.ContentType, input, e.Start, e.Length);
                        files.AddFile(e.Name, sub);
                    }
                }
            }
        }