ASP.NET 3.5: A Beginner's Guide - www.mustafaof.com

438ASP.NET 3.5: A Beginner’s GuideFigure 17-8 When images change, the page does not reload.point the Next => button is inoperable. The picture number helps to show where you are inthe sequence.This web site example is meant to show how to seamlessly change images and toincorporate buttons for use with Ajax-enabled controls. Once you use changing imageswith Ajax, you will wonder why this great tool was not available before. If you want toupdate some old web sites using Ajax, instead of changing the entire site so that all of thecontrols are within an UpdatePanel control, you can just add triggers where needed.While only a single UpdatePanel control was used in the example, you can add asmany Ajax Extension controls as you want to a web site. In this way you can more easilydistribute the other controls used in conjunction with Ajax. However, you only needa single ScriptManager control no matter how many UpdatePanel controls you use fora single page.