AjaxUploader v5.2 · ASP.NET Web Forms

Documentation . v5.2

Install, configure, license, and deploy AjaxUploader 5.2.

Quick-start setup, signer-config recipes for the new cloud transports, the full class reference, and migration notes for teams moving from 4.x - all in one place.

v5 Transports & Features NEW IN 5.2

Companion broker, 6 cloud sources, headless hooks, pro image editor

Demo pages covering the self-hosted multipleupload/server/companion OAuth and file-proxy broker (Dropbox / Box / Drive / OneDrive, with proxy and server-to-destination modes), 6 cloud sources (adding Unsplash), headless hooks for React / Vue / Svelte / Angular, the content-aware image editor (smart-crop, overlays, filters, AVIF/WebP), direct-to-S3 / Azure / GCS, tus 1.0, URL import, AES-GCM encryption-at-rest, cross-tab coordination, and IndexedDB resume. Start here if you're upgrading from 4.x.

API docs

Class Reference

Open the generated AjaxUploader 5.2 API reference with controls, events, providers, the IS3Signer / IAzureSigner / IGcsSigner interfaces, the new IImageTransformer extension point, and migration guides.

Upgrade

Upgrade Log

Review the v5 upgrade baseline, compatibility notes, and the main validation checklist for 4.x projects.

Local docs

Quick Start

Open the text guide copied from the local demo package and follow the seven-step setup flow.

Local docs

License Installation

See where ajaxuploader5.lic can live and how to troubleshoot reminder banners outside localhost.

Local docs

Deployment Checklist

Review handler registration, temp storage, request limits, permissions, and smoke-test steps.

Guide

Web Forms Quick Start

Read the generated Web Forms setup guide alongside the API reference and migration notes.

Quick start summary

Minimal Web Forms setup

  1. 1. Copy AjaxUploader.dll into your site's bin folder.
  2. 2. Register the au server control in Web.config or on the page.
  3. 3. Add the ajaxupload.axd handler entry in system.webServer.
  4. 4. Create a writable temp folder such as App_Data\UploaderTemp.
  5. 5. Add au:AjaxFileUpload to a Web Forms page and verify /ajaxupload.axd responds.
The local demo notes also call out the main app settings you can tune: temp directory, max file size, chunk size, allowed extensions, and resume support.
Open class reference View AjaxFileUpload API

Web.config example

Handler and control registration

<pages>
 <controls>
 <add assembly="AjaxUploader"
 namespace="AjaxUploader.Controls"
 tagPrefix="au" />
 </controls>
</pages>

<handlers>
 <add name="AjaxUploader"
 path="ajaxupload.axd"
 verb="*"
 type="AjaxUploader.AjaxUploaderHandler, AjaxUploader"
 preCondition="integratedMode" />
</handlers>