By William R. Vaughn
Written particularly for COM-based ADO builders retooling for ADO.NET utilizing the C# language, this ebook brings clean insights and tips about the ADO.NET expertise. Veteran authors William Vaughn and Peter Blackburn have packed this formative consultant with sensible suggestion on find out how to write code that's either swifter operating and more straightforward to appreciate.
The onset of the hot .NET know-how is forcing builders to fully reconsider their info entry recommendations. This ebook permits you to do that via operating examples and diverse discussions of what works and what doesnt. Derived from years of expertise operating with info entry builders, ADO.NET Examples and top Practices for C# Programmers includes a collection of innovations confirmed to enormously lessen overhead, difficulties, and confusionfor the devleoper, the approach, and the full staff. whereas a few are very simple to enforce, others require significant forethought to permit. this can be a builders bookfull of tricks, information and notes handed on from these whove spent major time within the .NET and C# trenches.
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Additional resources for ADO.NET Examples and Best Practices for C# Programmers
The DataReader object: This is used to provide raw data I/O to and from the Connection object. It returns a bindable data stream forWebForm appli- cations and is invoked by the DataAdapter to execute a specific Command. 0 Data Environment Designer. The DataAdapter manages a set of Command objects used to fetch, update, add, and delete rows through the Connection object. 11. lIRC: IfI recall correctly. NET • The DataTable object: Again, there is not an ADOc equivalent, but it's similar in some respects to the Recordset.
A Brief Look at XML No, I'm not going to launch into a tutorial on XML, just as I found it unnecessary to bury you in detail about the binary layout of the Recordset (not that I know anything about it). NET. NET and you ordinarily won't have to worry about how it's constructed until ADO. NET, or an application passing XML to you, gets it wrong. NET DataSet object can be constructed directly from XML; this includes XML generated by any application that knows how to do it (correctly). NET architecture contains root services that let you manage XML documents using familiar programming constructs.
This requires the user to drill down into a selected DataTable. It's better to bind to a specific DataTable in the DataSet Tables collection. • Use the form's constructor method to initialize instance variables. It is not a good idea to initialize instance variables at class level declaration since they can't be encapsulated in try/catch blocks to deal with any exceptions arising in the initialization. TIP This is a practice I picked up years ago: Install crude error handlers from the very beginning.