Visual Basic 2005 in a Nutshell, Third Edition

The System.Data Namespace | 107

.NET FCL

This is the Title of the Book, eMatter Edition

Copyright © 2006 O’Reilly & Associates, Inc. All rights reserved.

Dim textContent As String

Dim wordQueue As New Collections.Queue( )

wordQueue.Enqueue("First")

wordQueue.Enqueue("in")

wordQueue.Enqueue("first")

wordQueue.Enqueue("out")

Do While (wordQueue.Count > 0)

textContent &= " " & CStr(wordQueue.Dequeue)

Loop

MsgBox(textContent)

The output is “First in first out.”

The System.Collections.Stack class implements a first-in, last-out stack structure,

using the standard methods Push and Pop. See the Stack Class entry in Chapter 12

for information on its use.

New in 2005. The 2005 release of Visual Basic includes a new generics feature.

The collection classes within the System.Collections namespace are perfectly suited

for use with generics. See Chapter 10 for details on using collections with

generics.

The System.Data Namespace

System.Data and its nested namespaces, notably System.Data.OleDb, System.

Data.SqlClient, and System.Data.OracleClient, implement the primary database

interaction feature of the .NET Framework, ADO.NET. The OleDb, SqlClient,

and OracleClient namespaces define data providers that connect to a data source,

retrieve data from a data source, write data back to a data source, and execute

commands against the data source. The most important class in each of these

namespaces is the data adapter class ...