NET 2.0 AJAX Extensions also provide infrastructural
support such as the Scripthandlerfactory HTTP handler that was mentioned
previously, which supports the creation of JavaScript proxies for ASP.NET Web Services.
There is also an HTTP handler that caches and compresses the JavaScript files that make
up the AJAX Library. Another piece of functionality that the AJAX Extensions provides is
JSON serialization and deserialization.
ASP.NET 2.0 introduced a Membership service, which provides a forms authentication
and user management framework, and a Profile service, which supports long-term
storage of users??™ preferences and data. The ASP.NET 2.0 AJAX Extensions expose the
authentication portion of the Membership service and the Provider service as web
services. These services can be leveraged by the AJAX Library. The library??™s
Sys.Service.Authentication class provides the ability to log users on to their site using
forms authentication, without requiring a postback to the server. Similarly, the library??™s
Sys.Service.Profile class provides for asynchronous storage and retrieval of user settings,
such as the site theme.
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