Basic Drop Zone

Demo uploads land in a temporary store and are swept after 60 minutes. To keep files, handle FileUploaded — see Single File for the complete save pattern.
Basic Drop Zone

A simple drag-and-drop zone using the EnableDropZone property. Drop files onto the area to begin uploading.

What you should see: a drop zone that accepts dragged files and doubles as a click-to-browse button, so there is always a keyboard path.
Drag & drop files here, or paste from clipboard
<au:AjaxFileUpload ID="Uploader1" runat="server"
 AllowMultiple="true"
 ButtonText="Drop files here or click to browse"
 ShowProgress="true"
 EnableDropZone="true" />