Teach Yourself Visual Studio® .NET 2003 in 21 Days [Electronic resources] نسخه متنی

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Teach Yourself Visual Studio® .NET 2003 in 21 Days [Electronic resources] - نسخه متنی

Jason Beres

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Day 10. Accessing Data with ADO.NET



Most of the applications that you write must access some sort of data store. Today, you learn about data access in .NET. ActiveX Data Objects .NET (ADO.NET) is the technology used in the .NET Framework for all database access. Before .NET, the main technology for data access was ActiveX Data Objects (ADO). ADO was great, but it had its drawbacks. But when there's only one way to do something, as with ADO and accessing data, it's easy to forget about the drawbacks and just work with what you have. Microsoft set out to fix all of these drawbacks in ADO.NET, which was written from the ground up specifically for data access in .NET and the challenges that developers face in the disconnected environment of the Internet. Today, you learn




  • The ADO.NET architecture and how it differs from ADO




  • How to connect to databases with the Connection object




  • How to use DataReaders




  • How to use the Command object




  • How to use DataAdapters




  • How to use DataSets




  • How to filter and sort DataSets with DataViews




  • Databinding fundamentals in Windows Forms




Day 13, "XML Web Services in .NET," you learn more about databinding controls and Web Forms. Today, we concentrate on understanding ADO.NET and Windows Forms.



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