Distance Learning Center

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Distance Learning Center

• Lecture 1
• Introduction to Visual Basic
• Programming
• Melissa Lin, IT Consultant
• HenEm, Inc. Parkville, Missouri
• linm_at_ipfw.edu
• http//www.etcs.ipfw.edu/linm

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Lecture 1 Introduction

• Introduction Learning objectives of the class
• Installation of Visual Studio .NET2003
• Introduction to Visual Basic .NET2003
• Basic Concept of Visual Basic Programming
  Language
• Programming Environment
• Use Microsoft Visual Studio .NET2003

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Syllabus

• WebCT http//webct.ipfw.edu/
• Web Site http//www.etcs.ipfw.edu/linm
• Email Use WebCT email for this class
• linm_at_ipfw.edu
• Test Date February 14 16, 2005
• March 28 30, 2005
• May 2 4, 2005
• Grading Homework Projects 70 Quizzes
  Exams 30
• Emergency Advice or Support ET221B, Professor
  Paul Lin at 260-481-6339 or lin_at_ipfw.edu

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Learning Objectives

• Visual program design and development
• Fundamentals of Object Oriented Programming (OOP)
• Event driven programming
• Objects, properties and methods
• Write Visual Basic projects

Windows History Windows 1.0
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Text Book References

• Text book
• Programming in Visual Basic .NET 2003 Update
  Edition by Julia Case Bradley and Anita C.
  Millspaugh, McGraw-Hill, ISBN 0-07-297039-1
• References
• Online Learning Center http//www.mhhe.com/vbnet2
  003
• Microsoft VB.NET Homepage http//www.microsoft.c
  om/net
• VB developers Resource Center http//www.mvps.org
  /vbnet
• Microsoft Developers Network Homepage for VB.NET
  http//msdn.microsoft.com/vbasic
• Paul D. Sheriff, PDSA, Inc.
• A Web Introduction to VS.NET
• MSDN Home page
• http//msdn.microsoft.com/

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Installing Microsoft Visual Studio .NET 2003

• System requirements
• Install the Microsoft Visual Studio .NET
  framework
• This is one of the Windows XP updates, listed as
  recommended
• Insert the Microsoft Visual Studio .NET CD
• Approximately 2 GBytes of disk space is used
• Help files (MSDN) are valuable
• Can also install C C if desired
• Follow items 1, 2, and 3 on the setup screen to
  complete your installation

Microsoft VS.NET System Requirements Page
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Overview of Programming

• The Structure and Operation of a Computer
• Computer system hardware and software
• Processor (registers, primitive operations)
• Main memory (RAM, ROM)
• Data types (integers, real, floating-point
  numbers, strings, etc.)
• Sequence and Data Control
• Storage management
• Operating environment

Reference Computer Functions and Applications,
by P. Lin http//www.etcs.ipfw.edu/lin/Presentati
on/CompNetApps11_17_files/frame.htm
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Overview of Programming (continue)
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Major Components of Computer Systems

• Input Unit (keyboard, mouse, scanner, Internet
  through TCP/IP)
• Central Processing Unit (CPU)
• Output Unit
• Memory Unit
• Primary memory (RAM, ROM)
• Secondary memory (Hard drives, zip disks, floppy
  disks, etc)

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Object Technology

• Objects are essentially reusable software
  components that model items in the real world,
  such as windows cars, vehicles, and so on
• Object technology is a packaging scheme that
  enables programmers to create meaningful software
  units.
• Object-Oriented Programming tends to produce
  software that is more understandable, better
  organized, and easier to maintain, modify and
  debug.

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Object Model

• Object gt Noun
• Form and Controls
• Property gt Adjective
• Color of a Form
• Method gt Verb
• Move a Form
• Event gt Occurs when the user takes an action
• User clicks a button, User moves a form
• Class gt Template to create new object
• Each control added is an Instance of a Class

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Dot Notation

• Used to reference object's properties and events
  in code
• Object dot Property
• Form.Text, TextBox.Text
• Object dot Event
• Form.Hide( ), TextBox.Focus( )
• To reference an object's events use an underscore
  instead of a dot
• Button_Click, ListBox_TextChanged

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Object Model Analogy

• Class automobile
• Properties make, model, color, year
• Object each individual car
• Object is also an Instance of the automobile
  class
• Methods start, stop, speedup, slowdown
• Events car arrives, car crashes

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Visual Basic .NET Programming

• Learning Visual Basic.NET Programming Language
  includes to learn
• The graphical user interface or GUI (gooey)
  which is an essential component of visual
  programming
• The GUI defines how various elements look and
  function
• Visual Basic programming language
• Microsoft Developers Network Homepage for VB.NET
  http//msdn.microsoft.com/vbasic

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A Sample Graphical User Interface (GUI)
TextBox
Label
GroupBox
PictureBox
RadioButtons
Buttons
Form
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VB.NET Program Development

• To create a VB.NET program you will utilize the
  Visual Basic .NET 2003 development environment,
  and you will
• create a window, called form
• select elements, which are classes, from a
  toolbox and place them within the window, called
  controls
• write code for each object that you place on the
  window that defines how the object responds to
  various events, called object-oriented
  programming (OOP).

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Event-Driven Programming

• The style of Execution as shown below is called
  event-driven
• A GUI determines how a user interacts with the
  program
• Each user interaction with the computer pressing
  a key, clicking a button, or selecting a menu
  item causes an event to occur
• Whenever an event occurs, the code you have
  written to handle that event is executed

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VB.NET Object Oriented Programming

• Using the VB.NET OOP Technology to work with
  objects and develop an event-driven program.
• Each object consists of
• Classes Forms, Labels, Buttons, etc
• Objects A particular Form, Label, Button, etc.
• Properties (attributes of an object) The Name of
  a form, the Text in a Label, etc.
• Methods (the actions that an object performs in
  response to GUI events) Close, Show, Clear, etc.
• Event when a user takes an action

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About Visual Studio .NET Framework

• Visual Studio .NET 2003 includes
• Visual Basic, Visual C, C, J, and the .NET
  framework.
• The .NET framework allowing objects from
  different languages to operate together
• The .NET languages-based programs all compile to
  a common machine language, called Microsoft
  Intermediate Language (MSIL)
• The MSIL code runs in the Common Language Runtime
  (CLR), which is part of the file .NET framework.

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About Visual Basic .NET Framework

• Visual Basic .NET 2003 provide
• Object-Oriented Programming (OOP) solutions and
  with increased object-oriented capabilities
• allowing for easier development of Web-based
  applications
• interoperability with other languages
• Major changes (to VB . NET) have been made, both
  to the language syntax and the way that data are
  stored and referenced

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VB.NET Program Development Process

• Planning (design)
• design the GUI (user interface)
• list the objects and properties needed
• plan the event procedures (what the code does)
• Programming (implementation)
• define the GUI using objects (Forms, Text Boxes,
  Labels, etc.
• set the properties
• write BASIC code to implement procedures

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VB.NET Application Files

• Each Visual Basic application create the
  following files with extensions
• .sln - a solution file that holds information
  about the project. This is the only file that is
  opened
• .suo - a solution user options file that stores
  information about the selected options
• .vb - a .vb file that holds the definition of a
  form
• .resx - a resource file for the form
• .vbproj - a project file that describes the
  project and lists the files are included
• .vbproj.user - a project user option file that
  holds project option settings

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Using Microsoft Visual Studio .NET

• Click on -gt Start
• Choose -gt All Programs
• Choose -gt Microsoft Visual Studio .NET 2003
• Click on -gt Microsoft Visual Studio .NET 2003

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Using Microsoft Visual Studio .NET (continue)

• Click on-gt File
• Choose-gt New
• Select-gt Project

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Using Microsoft Visual Studio .NET (continue)

• Select -gt Visual Basic Projects
• Select -gt Window Application
• Give a Project Name
• Specify the appropriate location

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Using Microsoft Visual Studio .NET (continue)

• The Microsoft VS Development Environment is also
  called integrated development environment (IDE)
• A form designer
• A code editor
• A compiler
• A debugger
• An object browser
• A Help facility

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Using Microsoft Visual Studio .NET (continue)

• Each window can be moved, resized, opened,
  closed, or customized
• Menu bar
• Toolbar

Menu bar
Toolbar
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VB.NET IDE Main Window
Tool bar
Menu bar
Tabs
Toolbox
Solution Explorer window
Form window
Properties window
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Toolbox

• Click Toolbox from the Toolbars
• Toolbox contains a list of tools that helps to
  design projects

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Solution Explorer
welcome.sln

• View Code
• View Design/
• Form
• Properties

Tool bar
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Properties
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Remark Statement

• Also known as Comment, used for documentation
• Non-executable
• Automatically colored Green in Editor
• Begins with an apostrophe ( ' )
• On a separate line from executable code
• At the right end of a line of executable code

' Display the Hello World message.
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Option Strict On
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Visual Studio Help

• Extensive Help feature includes
• Microsoft Developer Network library (MSDN)
• Entire reference manual
• Coding examples
• Filter MSDN help to display VB topics only
• Run MSDN from hard drive, CD or Web
• To view Help choose Contents, Index or Search
  from Help Menu
• Context-Sensitive Help is available by pressing F1

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Help Menu
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Help Menu (continued)

• Select an appropriate subject

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Summary

• Introduction Learning Objectives of the class
• Installation of Visual Studio .NET2003
• Introduction to Visual Basic .NET2003
• Basic Concept of Visual Basic
• Visual Basic Programming Language
• Use Microsoft Visual Studio .NET2003
• Next - First Visual Basic Planning and Programming

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Question?

• Answers
• linm_at_ipfw.edu