Files begin uploading immediately after selection. This is enabled with
AutoUpload="true". No separate upload button is needed.
What you should see: pick any file and the upload starts immediately — no button press. The queue row shows live progress, then a green check when the server has stored the file.
Drag & drop files here, or paste from clipboard
<au:AjaxFileUpload ID="Uploader1" runat="server"
AllowMultiple="true"
AutoUpload="true"
ButtonText="Select Files (Auto Upload)"
ShowProgress="true" />