Download ADO.NET: From Novice to Pro, Visual Basic .NET Edition by Peter Wright PDF

By Peter Wright

Designed to get programmers as much as specialist degrees as speedy as attainable, ADO.NET: From beginner to Pro is aimed at builders who've very little .NET or ADO.NET adventure, in addition to programmers who're now not but pleased 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 by way of exhibiting you the fundamental structure of ADO.NET, after which will give you the instruments you will want to paintings with info companies and the relationship, Command, and DataSet items. Wright then drills down into the themes which are crucial for you as a certified developer to appreciate, together with transactions, concurrency, typed DataSets, and using XML with ADO.NET.

Through quite a few hands-on examples and dealing code that's adaptable to person initiatives, you will how to create quickly and robust ADO.NET company functions. through the tip of this ebook, it is easy to paintings at a qualified point using Microsoft's strongest data-access technology.

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Additional resources for ADO.NET: From Novice to Pro, Visual Basic .NET Edition

Example text

Just as with GetValue, these methods all expect to be passed an integer in order to identify the specific column you are after (the first column in a row is always column number 0). Finally, every DataProvider should provide a set of Get routines to return objects matching the database column's actual data type. In the case of the SQL Server data provider, these are known as the GetSqlxxx methods. For example, GetSqlString, GetSqlMoney, GetSqlGuid, and so on. There's a full listing of all the routines in the SqlDataReader's online help.

These types are known as the SqlDbTypes. Although you cannot declare variables of these types in your own code, they are used a great deal with stored procedures to specify the types of data required for stored procedure parameters. SqlDbType defines an enum that you can use in your code to refer to SQL Server data types by name. The DataSet DataReaders are a wonderfully quick way to obtain a set of results from a single data connection. NET DataReaders offer little new functionality compared to good old-fashioned ADO Recordsets.

NET. Expand the References branch of your solution within the Solution Explorer and you should see the System. Data reference there. Data is essential if you're going to be doing any database work in your application. You still need to explicitly import the data provider that you're going to use. OleDb. 29 Chapter 2 Importing the data provider namespace in this way makes the various objects that comprise the data provider available to you. SqlClient you have access to the SQL Server client's DataReader, DataCommand, and Connection objects-objects specifically designed to work with a SQL Server-compliant data source.

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