At the
time of this writing, five server controls are included in the first release version of
ASP.NET AJAX: Timer, ScriptManager, ScriptManagerProxy, UpdateProgress, and UpdatePanel.
Currently, additional controls are packaged in the Futures CTP builds of ASP.NET AJAX,
which should surface in future releases of ASP.NET AJAX.
Using ASP.NET AJAX server controls is the easiest and quickest path to implementing
AJAX functionality in your ASP.NET application. They are also ideal for when a minimal
amount of change in desired for existing ASP.NET applications that make extensive use of
ASP.NET server controls.
?– Note If you plan on using Visual Studio 2005 AJAX-enabled web applications (following the web application
model and not the ASP.NET web site model), be sure to install ASP.NET AJAX after installing Visual Studio
2005 SP1.
CHAPTER 5 ?– INTRODUCING SERVER CONTROLS IN ASP.NET AJAX 82
Introducing the ScriptManager Control
The ScriptManager control is pivotal at the very heart of ASP.NET AJAX. This control, as its
name suggests, manages the deployment of the various JavaScript libraries that implement
the client-side runtime functionality of ASP.
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