Upload a single file at a time. This is the default behavior when
AllowMultiple is not set or set to false.
Drag & drop files here, or paste from clipboard
<%@ Register Assembly="AjaxUploader" Namespace="AjaxUploader.Controls" TagPrefix="au" %>
<au:AjaxFileUpload ID="Uploader1" runat="server"
ButtonText="Select a File"
AutoUpload="true"
ShowProgress="true" />