Beginning Web Development, Silverlight, and ASP.NET AJAX

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96 CHAPTER 4 ■ DATA BINDING WITH ASP.NET Using the GridView Control The GridView control is also found on the Data tab of the Toolbox. When you drag and drop it onto the design surface, the GridView Tasks pane will appear. This pane enables you to format how the grid will appear, choose the desired data source, edit the columns to view, and change the templates used to represent the data (see Figure 4-24). Figure 4-24. The GridView Tasks pane You can hook the GridView control up to the data source by using the Choose Data Source drop-down list. Choose the SqlDataSource control that you created in the previous step and run the application. You’ll now have the same functionality as you had in earlier examples (that being the ability to view the addresses of people in the Adventure- Works database, filtered by a ZIP code passed in the query string), and you didn’t have to write a single line of code to achieve this! With the GridView control, you can go a lot further. The Auto Format dialog box enables you to choose from a large set of preset styles to determine how your grid will appear. You can see the Auto Format dialog box, including a live preview of how your grid will appear, in Figure 4-25. The set of columns that you want to display can be edited from within the Tasks pane. If you select Edit Columns, the Fields dialog box will display, enabling you to add or remove columns from the set of selected fields. The query on the SqlDataSource in this example returns two columns—AddressLine1 and PostalCode—which have been automatically added to the GridView. If you only want to show the AddressLine1 column values, you can easily do this by selecting the PostalCode column and deleting it from this dialog box (see Figure 4-26). Alternatively, you may want to be able to access the column from code, but not show it to the user. In this case, you can set the column’s Visible property to False.
CHAPTER 4 ■ DATA BINDING WITH ASP.NET 97 Figure 4-25. Auto-formatting your GridView Figure 4-26. The GridView Fields dialog box In addition to having columns that are bound to your data source (called BoundField types; see Figure 4-26), you can also add a number of different column types to your grid. These include check boxes, hyperlinks, buttons, and so on. The GridView control has a
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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 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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CHAPTER 11 Ajax Applications and Em
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CHAPTER 11 ■ AJAX APPLICATIONS AN
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CHAPTER 12 AJAX Extensions for ASP.
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CHAPTER 12 ■ AJAX EXTENSIONS FOR
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CHAPTER 13 Ajax Scripts and Service
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CHAPTER 13 ■ AJAX SCRIPTS AND SER
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332 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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