By William R. Vaughn
Written in particular for COM-based ADO builders retooling for ADO.NET utilizing the C# language, this booklet brings clean insights and tips about the ADO.NET expertise. Veteran authors William Vaughn and Peter Blackburn have packed this formative consultant with functional suggestion on how one can write code that's either quicker working and more uncomplicated to appreciate.
The onset of the recent .NET know-how is forcing builders to totally reconsider their information entry innovations. This booklet permits you to 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 top Practices for C# Programmers includes a suite of strategies confirmed to tremendously decrease overhead, difficulties, and confusionfor the devleoper, the process, and the whole staff. whereas a few are very simple to enforce, others require enormous forethought to permit. this can be a builders bookfull of tricks, counsel and notes handed on from these whove spent major time within the .NET and C# trenches.
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Additional info for ADO.NET Examples and Best Practices for C# Programmers
I discuss the Connection object in Chapter 2. The invocation of the DataSet Update method triggers the execution of the DataAdapter object's UpdateCommand, InsertCommand, or DeleteCommand to post changes made to the DataSet object. I discuss updating in Chapter 7. The figure shown earlier (Figure 1-2) also illustrates the working relationship between the DataSet and the DataAdapter. NET to generate the appropriate action queries for the DataAdapter UpdateCommand, InsertCommand, and DeleteCommand using the CommandBuilder object.
NET Data Provider that must be installed and registered separately-and so it is not part of System. Data namespace. The Solution Explorer is a handy way to see what namespaces are already referenced for your application's assembly, as shown in Figure 1-6. System. vb Form 1. vb c. 1111 I .. I ~ p. I ~ s. 18 o. I Figure 1-6. The Solution Explorer showing a newly created WinForm application. Odbc to make sure your code correctly references these libraries. NET, won't permit name collisions, but adding a namespace to the using list makes coding easier by providing "shorthand" syntax for commonly used objects.
Sure, it's fast when you test your stand-alone application, but does this approach scale? • Assumes that the base tables are exposed by the DBA; in many shops, this is not the case, for security and stability reasons. While you can (and should) construct DataSet objects from stored procedures, you also need to provide stored procedures to do the UPDATE, DELETE, and INSERT operations. NET to expose the same functionality afforded to direct table queries-it does not appear to. I have found, however, that it is possible to perform updates against complex table hierarchies, but it requires more planning and work than the simplistic table-based queries often illustrated in the documentation.
ADO.NET Examples and Best Practices for C# Programmers by William R. Vaughn