By William R. Vaughn
Written particularly for COM-based ADO builders retooling for ADO.NET utilizing the C# language, this publication brings clean insights and tips about the ADO.NET know-how. Veteran authors William Vaughn and Peter Blackburn have packed this formative consultant with functional suggestion on the way to write code that's either swifter operating and more straightforward to appreciate.
The onset of the recent .NET expertise is forcing builders to totally reconsider their facts entry thoughts. This booklet lets you do that via operating examples and various discussions of what works and what doesnt. Derived from years of expertise operating with facts entry builders, ADO.NET Examples and most sensible Practices for C# Programmers includes a suite of innovations confirmed to enormously lessen overhead, difficulties, and confusionfor the devleoper, the process, and the complete crew. whereas a few are very simple to enforce, others require significant forethought to allow. it is a builders bookfull of tricks, assistance and notes handed on from these whove spent major time within the .NET and C# trenches.
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Extra info for ADO.NET Examples and Best Practices for C# Programmers
You use the DataAdapter Fill method to "run" the SelectCommand query in the specified DataAdapter. The results are fed to the DataSet object. By default, the Fill method names the DataSet "Table" (for some reason). I would have preferred "Data" or "DataSet" to discourage confusion with database tables. The Fill method is very (very) flexible as it can be invoked in a bevy of ways, as I describe in Chapter 4. " In the next statement, I bind the DataSet to the DataGrid control. Fill(ds, "Titles and Price"); II Defaults to "Table" DataGrid1.
NET search the specified namespace referenced in your code to resolve any ambiguous object names. Basically, using helps the compiler resolve namespace references more easily. The using statement should be positioned first in your code-above all other declarations. NET Data Provider, you can code SqlConneetion en = new SqlConneetion(); However, the downside to this approach is potential object collisions and failed compiles. Again, some pundits feel that it's best to explicitly reference declared objects.
Your code handles any collisions or problems with reconciliation. NET IDE lets you use drag-and-drop and a number of wizards to construct much of the code to accomplish this. NET DataReader Strategies") you might not choose to avail yourself of this code-it's kinda clunky. NET can manage intertable relationships and construct a hierarchical data structure that you can navigate and update at will-assuming you added code to define the relationships and constraints. NET so far, I have a number of concerns regarding the disconnected DataSet approach: • The overhead involved in downloading high volumes of data and the number of locks placed on the server-side data rows is problematic at best.
ADO.NET Examples and Best Practices for C# Programmers by William R. Vaughn