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Visual Basic 2015 Unleashed
book

Visual Basic 2015 Unleashed

by Alessandro Del Sole
July 2015
Intermediate to advanced content levelIntermediate to advanced
1300 pages
87h 27m
English
Sams
Content preview from Visual Basic 2015 Unleashed

Understanding Connections and Data Readers

To establish a connection to a database, you need to create an instance of the SqlConnection class by passing the connection string as an argument. Then you invoke the Open method to open the connection so you can perform your data operations. Finally, you invoke Close to close the connection. The following code, which requires an Imports System.Data.SqlClient directive, demonstrates how you establish a connection to the Northwind database:

Using myConnection As New  _      SqlConnection("Data Source=SERVERNAME\SQLEXPRESS;Initial Catalog=Northwind;" &"Integrated Security=True;MultipleActiveResultSets=True")      myConnection.Open()End Using

Utilizing a Using..End Using

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Publisher Resources

ISBN: 9780134196664Purchase book