Multi-Step Form with Upload

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.

A three-step registration form where step 2 requires document upload. Navigation between steps is controlled, and the form collects data across all steps. Uses Web Forms controls for form fields.

What you should see: a document upload as one step of a multi-step form - the uploaded id survives step navigation until final submit.

1. Personal Info

2. Documents

3. Review

Name

Please upload your ID document:

Drag & drop files here, or paste from clipboard

All steps complete. Ready to submit!

<!-- Step 1: Web Forms controls -->
<asp:TextBox ID="txtName" runat="server" CssClass="form-control" />
<asp:TextBox ID="txtEmail" runat="server" TextMode="Email" />

<!-- Step 2: AjaxFileUpload -->
<au:AjaxFileUpload ID="Uploader1" runat="server"
 AutoUpload="true"
 ShowProgress="true"
 OnClientUploadComplete="onDocUploaded" />

<script>
function onDocUploaded(file) {
 document.getElementById('msNext2').disabled = false;
}
</script>

<!-- Step 3: Submit -->
<asp:Button ID="BtnSubmit" runat="server" Text="Submit" />