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# AjaxUploader 5.2 Guides

This section is the practical companion to the generated API reference.

## Use these guides when

- You are starting a new ASP.NET Web Forms project with `AjaxUploader`.
- You are upgrading an older 4.x project that still uses `CuteWebUI`.
- You need a quick reminder of handler setup, embedded resource behavior, or license file placement.

## Guide map

- Web Forms Quick Start
- Migrating From 4.x
- Upgrade Log
- Legacy To v5 Map
- Legacy Uploader
- Legacy UploadAttachments
- Legacy UploadPersistedFile
- Deployment And Licensing

## Rule of thumb

- New development should prefer AjaxFileUpload and the other `AjaxUploader.*` namespaces.
- Existing 4.x projects can keep using the `CuteWebUI` compatibility controls while they move forward incrementally.