AJAX Callback for ASP.NET

AJAX-enable any ASP.NET controls. Simply put a CallbackPanel inside the form and other controls that you want to AJAX-update inside the CallbackPanel;
Works transparently, not a single line of code needed. The CallbackPanel works transparently as if it didn't exist in the page --- yet contents/controls inside the panel are automatically AJAX updated;
Works ASP.NET 1.1, 2.0 and 3.5. Works independently and works on all major ASP.NET releases.
Automatically supports validators.. All validations logics are performed before an AJAX call as if a post back was to occur. This again means no special coding for AJAX;
Group multiple CallbackPanels. When multiple CallbackPanels are grouped together, triggering any one of them triggers them all. Ideal for updating different regions in the same page with one AJAX call;
Supports inline JavaScript. Inline JavaScript code can be rendered and updated through AJAX callback;
Works with our without ASP.NET AJAX. EO.Web CallbackPanel works independently -- or coexists with ASP.NET AJAX. It's not either one or the other. No tough choice to make.

EO.Web CallbackPanel works very similar to ASP.NET AJAX UpdatePanel. However it has a number of important advantages over ASP.NET AJAX UpdatePanel:

Feature	EO.Web Callback	ASP.NET AJAX UpdatePanel
Platform	Works with ASP.NET 1.1, 2.0 and 3.5.	Does not work with ASP.NET 1.1.
Validators Support	Automatically executes all validators before an AJAX call. User code flows are identical with or without AJAX.	Does not trigger validators.
Embedding JavaScript	EO.Web CallbackPanel supports embedding JavaScript, as such it's possible for you to render dynamic JavaScrip through AJAX callback. As a result, you can use EO.Web CallbackPanel to update other EO.Web controls (such as Menu, TreeView, etc) that reply on JavaScript to function.	Does not support embedding JavaScript thus can not AJAX update any control that uses JavaScript. For example, ASP.NET AJAX UpdatePanel can not update ASP.NET Menu.
Various client side event handlers	Supports various client side event handlers, with which you can participate in almost every step of the callback process.	Support limited client side event handlers but difficult to use.
Miscellaneous Features	EO.Web CallbackPanel supports various miscellaneous features such as redirection, exception message output and caching.	Does not support these features.

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