How to ASP.NET Ajax
ASP.NET Ajax extension is a vital component of ASP.NET that enables the effective implementation of Ajax functionalities. Formerly known as Atlas, ASP.NET Ajax serves as an extension of ASP.NET 2.0 and offers comprehensive support for both client-side and server-side development.
Networking layer
The client-side aspect of the Ajax extension revolves around a robust client library, with the networking layer being its core component. This networking layer manages the intricacies involved in making asynchronous calls using the XMLHttpRequest object. It simplifies the complexity of communication between the server and the client, facilitating efficient and responsive interactions.
XMLHttpRequest
The XMLHttpRequest element which belongs to AJAX web applications is very helpful since it can increase the effectiveness and usability of web pages. In layer 7, the data transmission is between the server and the end user. XMLHttpRequest serves as the object in JavaScript for the servicing of the server requests and their acceptance afterward. With this you are able to perform a partial updates of the site without requiring the web server side refresh of the availability which makes the number of users to drop a notch on the bandwidth usage technique. XMLHTTP protocol designed for transport of data in the form of XML is based on category elements (categories) to make it easy for the client system data to flow from the client to the web server with minimal hustle and bustle. This is in addition to the fact that you will also need to bear in mind that XMLHttpRequest object can be utilized on all the latest browsers.
UpdatePanel
Among the commonly utilized ASP.NET Ajax server controls are ScriptManager, UpdatePanel, UpdateProgress, and Timer. The ScriptManager control and the UpdatePanel control play key roles in enabling partial-page updates, allowing selected parts of the web page to be refreshed without requiring a full postback. The UpdateProgress control provides valuable status information regarding the progress of downloads occurring within the UpdatePanel. Lastly, the Timer control facilitates the execution of postbacks at specified intervals, offering enhanced interactivity and dynamic functionality to the web application.
Conclusion
The ASP.NET Ajax extension is an integral part of ASP.NET, providing the necessary tools and components for effectively implementing Ajax functionalities. It supports both client-side and server-side development and offers seamless communication between the server and the client through the XMLHttpRequest object. With the aid of ASP.NET Ajax server controls, developers can achieve partial-page updates, display progress information, and enable postbacks at specific intervals, resulting in dynamic and interactive web applications.