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ASP.NET 3.5 AJAX Unleashed by Robert Foster

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Chapter 8. Building an ASP.NET AJAX Extender Control

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Add ASP.NET Controls

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How to Build an Extender Control

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Server-Side Code

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Client-Side Code

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As you learned in Chapter 7, “Using the ASP.NET AJAX Control Toolkit,”ASP.NET AJAX Extender Controls enable you to easily extend the functionality of an existing ASP.NET standard control (such as a TextBox, Button, or Label control). In this section, you learn how to use the Visual Studio 2008 tools to add a control extender to a standard ASP.NET control.

Add ASP.NET Controls

First, you need a page with some controls, which is defined in Listing 8.1.

Example 8.1. ASP.NET ...

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