Ajax for ASP.NET AJAX

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Overview

Impressive AJAX user experience no longer means difficult JavaScript. It does not mean countless UpdatePanels and Triggers – it can be just one convenient Visual Studio dialog. Telerik RadAjax can make any existing or new application fly. Forget about page refreshes. Forget about writing code. RadAjax is developed on top of Microsoft ASP.NET AJAX and automatically adds the necessary controls that will AJAX-enable any existing page featuring standard or third party controls.

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Features

Employs Microsoft's ASP.NET AJAX Engine

The Telerik Ajax manager control borrows the original idea for codeless centralized configuration of AJAX relations and uses the standard Microsoft ASP.NET AJAX engine.
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Postbacks Automatically Replaced with AJAX

In the core of Telerik RadAjax is a patent-pending technology, which uses the Microsoft ASP.NET AJAX engine to make selected controls on the page perform AJAX callbacks instead of traditional postbacks. The AJAX-enabled controls are not merely rendered with callbacks, but preserve their interaction with the server and relations with the other controls on the page. In fact, ajaxified controls are unaware that they are working with callbacks instead of postbacks.
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AJAX Manager
AJAX Manager is one of the two major controls of the Telerik RadAjax suite. AJAX Manager allows developers rapidly develop powerful and complex AJAX solutions.
- You can ajaxify all controls that normally work with postbacks.
- Defines visually and without code (in Visual Studio design-time) which elements should initiate AJAX requests and which elements should be updated
- No need to modify your application logic
- Allows you to update a number of page elements at once regardless of their position on the page.
- No need to write any JavaScript or invoke AJAX requests manually
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AJAX Panel
AJAX Panel is another major control of the Telerik RadAjax suite. The AJAX Panel control provides the easiest way to AJAX-enable ASP.NET web control(s). To do this you simply need to place the controls that you want ajaxified into AJAX Panel and Telerik RadAjax takes care of the rest. Best of all, this happens transparently to the framework as well as the controls that are being ajaxified.

The main features of AJAX Panel are:
- Ajaxifies all controls inside that normally work with postbacks.
- Defines visually and without code (in Visual Studio design-time) which elements should be updated via AJAX requests. All elements wrapped in the panel will be updated via AJAX
- No need to modify your application logic
- Allows you to update a number of page elements at once
- No need to write any JavaScript or invoke AJAX requests manually
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AJAX Loading Panel

A loading image is shown as a progress indication when an AJAX request is performed, i.e. when the page is loading silently. Telerik AjaxLoadingPanel control supports templates to display custom images during an Ajax request. This improves the look and feel of the page as there are no sudden changes and unnecessary flickering. In order to have a LoadingPanel, you simply need to drag it to your web form from the toolbox just like any control.
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No Need to Modify your Application

One inconvenience of Microsoft ASP.NET AJAX is that you have to place UpdatePanels around areas that need to be updated, set triggers, or manually invoke AJAX requests. Thanks to Telerik RadAjax this problem is eliminated – you only have to drag-and-drop the AJAX Manager on the page, tick the respective checkboxes in the provided dialog, and hit F5. Your application is now AJAX-enabled using the standard Microsoft ASP.NET AJAX engine.

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No Need to Write a Single Line of Code

The Telerik Ajax manager control offers a completely codeless approach for AJAX-enabling of existing or new web applications, using the Microsoft ASP.NET AJAX engine. Postback requests of selected elements are automatically replaced with AJAX callbacks so that you don't have to attach custom JavaScript functions to page elements and invoke AJAX requests manually.
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Back Button and History Support

One of the greatest shortcomings of the AJAX applications and components is the inability to handle the Back and Forward buttons and browser History. Telerik RadAjax successfully addresses these issues (currently under IE only but solutions for Gecko-based browsers are being worked on as well ).
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Supports Standard & Most Third Party Controls

The Telerik RadAjax engine can AJAX-enable any of the standard controls shipped with Visual Studio 2005/2008/2010 as well as all of the controls included in the Telerik suite for ASP.NET AJAX. Most third party controls are also supported, however due to some specifics of certain implementations full compatibility is not always possible. See a live demo

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Suitable Even for Very Complex Applications

Most AJAX-enabling products offer just limited AJAX capabilities, allowing you to merely load or update a control with a callback. Those solutions, however, do not send form values to the server for processing, or do not preserve the ASP.NET page lifecycle. As a result you can implement only a limited number of scenarios. Telerik RadAjax on the other hand can cover any scenario that can be implemented with the traditional postback mechanism. As a result, you can build very sophisticated applications, similar to Outlook Web Access or the Telerik Web Mail Sample Application.
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Rich Client-side API and Events

You can use the RadAjaxManager control or other control which initiates postbacks to initiate your own AJAX requests explicitly on the client. At client-side you can execute your own JavaScript functions at certain stages of the AJAX request.
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Appearance

The Telerik AJAX Manager features a rich set of loading panel embedded skins suitable for any application UI. The skins can be easily switched using a single property. This significantly simplifies styling even for complex configurations.

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VS Plug-in for Testing RadControls

Telerik's automated software testing tool Test Studio employs a rich set of features to help you automate AJAX-intense web content. You can test complex UI actions like drag-and-drop, invoke JavaScript functions from your test code, and perform logging actions. Additionally, the test recorder makes it easy to wait on AJAX operations before executing a specific verification. What’s more, Test Studio is the best way to test RadControls for ASP.NET AJAX. The powerful test recorder automatically detects the controls and exposes commonly used verifications. Learn more
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