Sams Teach Yourself ASP.NET 3.5 in 24 Hours, Complete Starter Kit

Chapter 23. Building More Responsive Web Pages with ASP.NET AJAX

<feature><title></title>

In this hour, we will cover

• The benefits of AJAX-enabled websites

• How AJAX improves the responsiveness of web pages

• Implementing AJAX with the UpdatePanel control

• Using Multiple UpdatePanels on an ASP.NET page

• Displaying a Loading message with the UpdateProgress control

</feature>

Throughout this book we have created many ASP.NET pages that execute server-side code based on some user action. Clicking a button causes the Button Web control’s server-side Click event handler to execute. Selecting an item from a DropDownList control whose AutoPostBack property is set to True causes the DropDownList’s SelectedIndexChanged event to fire. Clicking the header column of ...