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Build Your Own ASP.NET 4 Web Site Using C# & VB, 4th Edition by Cristian Darie, Wyatt Barnett, Timmothy Posey

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Chapter 17ASP.NET AJAX

Throughout this book, we’ve been building ASP.NET Web Forms that, after any user interaction, send all of the page’s data back to the server. You may not really notice any problems with this approach if you’re developing locally on a fast computer, but once your application is deployed to the Internet, it may appear to be quite slow and unresponsive to users. However, by harnessing ASP.NET AJAX, you can take a slow and clunky web application and make it sing with surprisingly little effort.

In this chapter we’ll learn about:

  • what Ajax is and how it works

  • ASP.NET AJAX

  • the UpdatePanel and UpdateProgress controls

  • using triggers

  • the ASP.NET AJAX Control Toolkit

  • the ValidatorCalloutExtender control extender

  • jQuery and ...

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