RadAjax for ASP.NET AJAX

The following ASP.NET controls are not compatible with partial-page updates, and are therefore not supported inside an UpdatePanel control:

• TreeView and Menu controls.

• Web Parts controls. For more information, see ASP.NET Web Parts Controls.

• FileUpload controls when they are used to upload files as part of an asynchronous postback.

• GridView and DetailsView controls when their EnableSortingAndPagingCallbacks property is set to true. The default is false.

• Login, PasswordRecovery, ChangePassword, and CreateUserWizard controls whose contents have not been converted to editable templates.

• The Substitution control.

See a full list of controls, not compatible with RadAjax for ASP.NET AJAX from the official MS AJAX documentation here.