Beginning Web Development, Silverlight, and ASP.NET AJAX

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292 CHAPTER 12 ■ AJAX EXTENSIONS FOR ASP.NET Figure 12-9. ASP.NET application using Ajax Building a Simple Ajax Application with ASP.NET Now, the example of adding two numbers is all very good, but how does ASP.NET AJAX stack up when writing a more typical ASP.NET page—for example, one that uses a DataGrid to bind to a back-end data source ■Note If you are amending an existing ASP.NET application to use Ajax, you should remember that some changes to your Web.config file will need to be made to reference the AJAX libraries. A good shortcut is to create a new ASP.NET AJAX application and copy the information from its Web.config file. Let’s put this together now. First, create a new web form and add a SqlDataSource control to it. Open the SqlDataSource Tasks pane, as shown in Figure 12-10. Figure 12-10. Adding a SqlDataSource to an Ajax application
CHAPTER 12 ■ AJAX EXTENSIONS FOR ASP.NET 293 Click the Configure Data Source link to go into the Configure Data Source wizard for the SqlDataSource. To see all the steps in this wizard, take a look back at Chapter 4, where the same connection is made. Otherwise, if you already have the AdventureWorks database set up with SQL Server, enter the configuration string on the first step on the wizard. See Figure 12-11 for details. Here’s an example connection string: Data Source=.\SQLEXPRESS;Initial Catalog=AdventureWorks;Integrated Security=True Figure 12-11. Connecting to the database When you click Next, you’ll be given the option to either use a custom SQL statement or specify columns from a table or view (see Figure 12-12). Select the former (“Specify a custom SQL statement or stored procedure”).
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The EXPERT’s VOIce ® in .NET Beg
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Beginning Web Development, Silverli
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Contents About the Author . . . . .
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■CONTENTS ix ■CHAPTER 5 ASP.NET
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■CONTENTS xi ■CHAPTER 11 Ajax A
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■CONTENTS xiii ■CHAPTER 15 Enha
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About the Author ■LAURENCE MORONE
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Introduction This book is aimed at
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PART 1 Building Web Applications
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4 CHAPTER 1 ■ INTRODUCTION TO WEB
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10 CHAPTER 2 ■ BASICS OF WEB DEVE
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38 CHAPTER 3 ■ WEB FORMS WITH ASP
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CHAPTER 4 Data Binding with ASP.NET
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CHAPTER 4 ■ DATA BINDING WITH ASP
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106 CHAPTER 5 ■ ASP.NET WEB SERVI
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CHAPTER 6 Deploying Your Web Site I
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CHAPTER 6 ■ DEPLOYING YOUR WEB SI
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CHAPTER 7 .NET 3.0: Windows Communi
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CHAPTER 7 ■ .NET 3.0: WINDOWS COM
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CHAPTER 8 .NET 3.0: Windows Present
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CHAPTER 8 ■ .NET 3.0: WINDOWS PRE
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CHAPTER 9 .NET 3.0: Windows Workflo
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CHAPTER 9 ■ .NET 3.0: WINDOWS WOR
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234 CHAPTER 10 ■ .NET 3.0: PROGRA
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342 CHAPTER 14 ■ JAVASCRIPT PROGR
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CHAPTER 15 Enhancing the Web Experi
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CHAPTER 15 ■ ENHANCING THE WEB EX
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376 CHAPTER 16 ■ PROGRAMMING SILV
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416 ■INDEX applications. See also
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418 ■INDEX copying web sites, 25
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420 ■INDEX ■H H path language c
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424 ■INDEX Sequential Workflow Co
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Beginning Web Development, Silverlight, and ASP.NET AJAX

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