← v4 compatibility demos
Move a File Between Uploaders
Upload through the first control; its handler streams the file straight into the
attachment list using Upload(size, name, stream).
This is the v4 sample verbatim. It exercises args.OpenStream() and the
server-side Upload() overload together — the same pair a page uses
to accept a file from one place and store it somewhere else.
Uploader1 — upload here:
Drag & drop files here, or paste from clipboard
Attachments1 — the file appears here: