By William R. Vaughn
Written in particular for COM-based ADO builders retooling for ADO.NET utilizing the C# language, this publication brings clean insights and pointers on the ADO.NET know-how. Veteran authors William Vaughn and Peter Blackburn have packed this formative consultant with functional suggestion on the best way to write code that's either quicker operating and more straightforward to appreciate.
The onset of the hot .NET know-how is forcing builders to totally reconsider their facts entry options. This booklet 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 most sensible Practices for C# Programmers includes a collection of ideas confirmed to tremendously lessen overhead, difficulties, and confusionfor the devleoper, the procedure, and the complete crew. whereas a few are very simple to enforce, others require massive forethought to permit. this can be 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 resources for ADO.NET Examples and Best Practices for C# Programmers
NET approach. You should notice that there is no explicit call to open the connection-that is taken care of here silently by the FillO method; I talk more about this later. 35 Chapter 1 Also, I am specifying properties for the class' constructors to use when instantiating. NET classes have one or several constructors used to set different combinations of properties as the objects are being instantiated. After you understand these, you'll really appreciate how they make your code easier to write.
Throughout this section ofthe book, I walk through these object trees one at a time. Data namespace or thoroughly sick of it. Data :, r----···--····-, [tJ .. Common rB . OIeOb ~ . SqITypes I±J . XmI Figure 1-4. The System. Data namespace. System. Data Namespace Exploded The exploded System. Data namespace has over forty members-the top dozen or so are shown in Figure 1-5. NET developers. Table 1-1 lists and describes the most important of these objects-the ones you'll use most often (at least at first).
Connection object-it's no longer supported. There are other issues as well, as I discuss in Chapter 2, "ADO. NET executables is to encapsulate your ADOc (or other COM object reference) code in its own wrapper. With this approach, you only access specific methods of the wrapper object, which execute blocks of ADOc code. Few if any properties are exposed. This approach resembles what you do to implement a middle-tier COM component. It also means that you spend far less time in the interop layer-once when you enter the wrapper DLL and once when you return.
ADO.NET Examples and Best Practices for C# Programmers by William R. Vaughn