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tions) in how your ASP.NET application interacts with underlying. data. The ADO. ... The data source controls included with the ASP.NET include: ...

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UntitledPage 1Page 2This is the Title of the Book eMatter EditionCopyright 2005 OReilly & Associates Inc. All rights reserved.346Chapter 9CHAPTER 9Web Data AccessIn the previous chapters you created web pages but they did not interact with realdata. In this chapter youll begin to extract data from the database and fill in yourpages. Youll do this incrementally adding complexity as you go. Youll see how todisplay and update aGridView(which displays data in a grid) and how to handleevents generated by data controls. Youll also learn how to filter your data on the client side to display a subset of the data you retrieve from the database and how tocustomize the appearance of your data controls. Finally youll learn how to edit thedata in place and have that data update the database safely and efficiently in a multiuser environment. Youll put a premium on using data controls and letting the controls manage the plumbing of database interaction for you.Getting Data from a DatabaseTo see how to interact with a database youll begin by creating a web applicationthat can be used to display information about the NorthWind database (that comeswith SQLExpress and SQL Server).Start by creating a new web site called WebNorthWind.Youll be working with the Customers table in the NorthWind database so renameyour .aspx file from default.aspx to Customers.aspx.Remember to change the class name in the code file and in the pagedirective.You need a connection to the database. You can explicitly create one or you can usea control that depends on having a connection and one will be created for you. Letsstart by explicitly creating one.ch09.7243 Thursday October 13 2005 9:19 AMPage 3This is the Title of the Book eMatter EditionCopyright 2005 OReilly & Associates Inc. All rights reserved.Getting Data from a Database | 347Drag aSqlDataSourcecontrol onto the form (see Figure 91). You can drag and dropthis control either into Design view or into Source view. Switch to Design view an ...

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