By Peter Wright
Designed to get programmers as much as expert degrees as quick as attainable, ADO.NET: From beginner to Pro is aimed toward builders who've very little .NET or ADO.NET adventure, in addition to programmers who're no longer but ok with database programming. Best-selling writer Peter Wright painlessly strikes readers from easy database entry to the subtle manipulation of XML documents.
The booklet starts off through exhibiting you the elemental structure of ADO.NET, after which offers you the instruments you will want to paintings with info services and the relationship, Command, and DataSet items. Wright then drills down into the themes which are crucial for you as a qualified developer to appreciate, together with transactions, concurrency, typed DataSets, and using XML with ADO.NET.
Through various hands-on examples and dealing code that's adaptable to person tasks, you will create speedy and robust ADO.NET company functions. via the tip of this publication, one could paintings at a certified point using Microsoft's strongest data-access technology.
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Extra resources for ADO.NET: From Novice to Pro, Visual Basic .NET Edition
The syntax used here should be self-explanatory; I pass in a SQL statement as the first parameter and a Connection object to use as the second. This sets up the link between the SqlCommand object and a specific data connection. You could also set up the command with a string, connection and transaction, or even just a string. You'll look into those options in more detail later in the book. NET and come from a Visual Basic background, you may find "overloading" a difficult concept to grasp initially.
You can define additional indexes for your table with the third icon on the toolbar. The final icon allows you to check and manage the constraints on your database. In English, this allows you to set conditions that must be met when new rows are added to or removed from your table. For example, you might not want orders to be entered into an order tracking system without a valid customer number attached to the orders in question. This has been a somewhat whirlwind tour of the features of the table editor since I'm assuming that most of you have come across something very similar before.
NET code's Imports line, and that is the statement Option Strict On. You'll see this in the next example and in every single code example in this book. Setting Option Strict On forces VB to use strict type checking, which forces you the developer to make sure that when you assign one type to another, the two are compatible. For example, you can easily assign a byte to an integer without any loss of data, but you can't necessarily go the other way around. With Option Strict Off, VB will check all assignments and try to accommodate your needs.
ADO.NET: From Novice to Pro, Visual Basic .NET Edition by Peter Wright