cs 2340: programming in vb instructor: dr. qi yang office: 213 ullrich phone: 342-1418 email: yangq...
TRANSCRIPT
CS 2340: Programming in VB
Instructor: Dr. Qi Yang
Office: 213 Ullrich
Phone: 342-1418
Email: YangQ
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Web Sites
http://www.uwplatt.edu/csse/courses/CS234/
http://www.uwplatt.edu/csse/courses/CS234/
http://www.uwplatt.edu/~yangq
http://www.uwplatt.edu/~yangq/
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Three VB.NET Courses
• CS 2340: Programming in VB Prerequisite: CS1430• CS 3340: Windows Programming Prerequisite: CS2340 & CS2430 or CS2630• CS 3870: Web Protocols, Technologies and Applications Prerequisite: CS3340 Co-requisite: CS3630 (Database)
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CS 2340: Course Description
An introduction to event driven, object oriented programming techniques in VB.NET.
Students will design, code, and debug Graphic User Interface (GUI) programs and apply the techniques to business applications.
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CS 2340: Course Outcomes
Upon completion of this course, students should be able to
• Design and develop Graphical User Interfaces;
• Understand and code Event-Driven procedures;
• Program Visual Basic controls proficiently;
• Access database from VB.NET programs; and
• Design, develop and test Visual Basic programs.
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CS 2340: Textbook
Beginning VB.NET, 2nd Edition, Wrox
Not .NET 2010
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CS 2340: Course Work
8 Labs 160 (10 – 30 each)
6 Tests 200 (20 – 40 each)
1 Project 40
Total 400
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New Grading System
Course Grade Points Percentage Grade Points
A 368 - 400 92% 4.0
A- 356 - 367 89% 3.7
B+ 344 - 355 86% 3.3
B 328 - 343 82% 3.0
B- 316 - 327 79% 2.7
C+ 304 - 315 76% 2.3
C 288 - 303 72% 2.0
C- 276 - 287 69% 1.7
D+ 260 - 275 65% 1.3
D 240 - 259 60% 1.0
F below 240 0.0
No Curve8
Hands-on Tests
In all three VB courses
Paper published in
Journal of Information Systems Education
Volume 16, Number 2, Summer 2005
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CS 2340: Programming in VB
Different BackgroundsIf you have a very good background
You should get an A
You may not get an A
Else If you have a good background
You do not want to get a D
Else (Don’t have any background in VB)
You can get an A!
Come to class every day and do your work!
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CS 2340: Programming in VB
Every one could get an A!
That has never happened!
Every one should pass CS 2340!
That has never happened either!
Just Do It!
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Lab 1
10 points
Due 9 PM, Monday, September 12, 2011
No Grace Time!
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MS Visual Studio 2010
• Every PC in Ullrich
• Free Copy on your PC
• Will receive email about it
• Follow instructions to get your copy
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Create a VB.NET Solution
• Start MS Visual Studio 2010
• New Project…
• Visual Basic
• Windows
• Windows Form Application
• Name: YangQ_Lab1
• Create directory for solution: Uncheck
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Save Project and Solution
Make sure you know is your program!
• Save all
• Create Solution folder: Uncheck
• Browse location
• Could change project / solution names
• Check program location
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MS Visual Studio IDE(Integrated Development Environment)
• Title Bar• Menu Bar• Tool Bars• Solution Explorer• Properties Window• ToolBox• Auto Hide• Docked, Floating and Tabbed Document Drag to the arrow you want or Right click the title bar of the window
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MS Visual Studio IDEIDE Settings
Menu Bar / Tools / Options• Show all settings• Environment
– Document• Detect when file is changed outside the environment: Uncheck
• Projects and Solutions– Always show solution: Check– Save new projects when created: Check
• Text Editor– Basic
• Tabs: Tab size : 3 Indent size: Same as Tab size
• Windows Forms Designer• …
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MS Visual Studio IDE
Help Features
• How Do I
• Dynamic Help
• Contents
• Search
• Index
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Form Properties
• Form - Window
• Text
• Size
• FormBorderStyle
• StartPosition
• WindowState
• . . .
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Properties Window
• Properties
• Events
• Alphabetical
• Categorized
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ToolBox
• Most controls available on ToolBox
• Tabs on ToolBox
All Windows Forms
Common Controls
• Putting a control on form
Double Click
Drag and Drop21
Windows Controls
TextBox
Get Input
Display Output
Label
Display Information / Output
Button
User action
. . .
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Click Event
• The button’s Click Event
Users click a button when they want to do something.
• Event Procedure
VB function that will be called when the event happens
• We will write the event procedure• Click Event procedure template
Double click the button
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Declaring Variables
Dim theName As String
theName = txtName.Text
‘ This is comment
‘ To remove spaces from both ends
theName = txtName.Text.Trim()
We should get variable values from controls at the beginning, then use the variables, not the controls, in the code.
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Class MessageBox
• Method Show
MessageBox.Show(“Please Enter Your Name”)
• Caption (Title), MessageBoxButtons and MessageBoxIcon
MessageBox.Show("Enter Your Name Please!", _
"Lab 1", MessageBoxButtons.OK, _
MessageBoxIcon.Exclamation)
• Line continuation char: “ _”
VB has NO statement terminator
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String Operations
‘ Operators “&” and “+” append strings
MessageBox.Show("Hello, " & theName + "!”)
MessageBox.Show("Hello, " & theName + "!", "Lab 1”, _
MessageBoxButtons.OK, _
MessageBoxIcon.Information)
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If Statement
If theName = "" Then
MessageBox.Show("Enter Your Name Please!", "Lab 1", _
MessageBoxButtons.OK, _
MessageBoxIcon.Exclamation)
Else
MessageBox.Show("Hello, " & theName + "!", "Lab 1", _
MessageBoxButtons.OK, _
MessageBoxIcon.Information)End If
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The Click Event Procedure
Private Sub btnHello_Click(...) Handles btnHello.Click
Dim theName As String
theName = txtName.Text.Trim()
If theName = "" Then
MessageBox.Show("Enter Your Name Please!", "Lab 1", _
MessageBoxButtons.OK, _
MessageBoxIcon.Exclamation)
Else
MessageBox.Show("Hello, " & theName + "!", "Lab 1", _
MessageBoxButtons.OK, _
MessageBoxIcon.Information) End IfEnd Sub
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