TechTalk

Asynchronous Javascript (AJAX) technology enables web applications to provide features like- Partial Page Updates - Allows you to define an area of a webpage to postback and update independently from the rest of the page. Only the updated content is refreshed when the request completes Indicate Progress of an operation - This allows you to track progress of server-side process and continuously update the user. Desktop-like UI - With AJAX, you can provide users with controls such as modal dialog boxes, progress indicators, masked edit bixes, tooltips and more. Cross Browser, cross platform support - Javascript, AJAX and JQuery are all supported on multiple browsers and multiple platforms. Every ASP.NET page that uses AJAX must have one and only one ScriptManager class which enables- Registration of custom scripts Registration of web service method calls from client Since you can use only one instance of ScriptManager class in an ASP.NET page there is a ne...