Telerik RadAsyncUpload for ASP.NET AJAX allows you to perform configurable asynchronous uploads of single or multiple files. The control addresses the limitation to perform file uploads with plain post backs only, and supports web farm scenarios, as well as internal validation, using its http handler for this purpose. RadAsyncUpload provides smooth file async upload handling with rich progress status information display, and its efficient proprietary http handler allocates minimum server memory while providing security features. RadAsyncUpload and 120+ other controls are part of UI for ASP.NET AJAX, a comprehensive toolset taking care of the common functionality of your application, while leaving you with more time to work on its business logic.