1. Introduction to computers, the Internet & VB .Net
Tutorial 1
Introduction to computers,
the Internet & VB .Net

2. Introduction to Visual Studio .Net and IDE
Tutorial 2
Introduction to Visual Studio .Net and IDE

3. Start Page

4. Creating a New Project Select Windows Application
Select Visual Basic Projects
Specify project name
Specify location

5. Design View

6. Solution Explorer
Expanded mode
Collapsed mode
Form file
Continue 

7. Categorized & Alphabetic listing options
Properties Window
Categorized & Alphabetic listing options
Property name
Expanded mode
Property value
Collapsed mode

8. Using Help
Contents
Index
Search
MSDN (

9. Saving Project File > Save All Do not use File > Save or Save As
To copy a project, use Windows Explorer to copy the entire project folder

10. Introduction to Visual Programming
Tutorial 3
Introduction to Visual Programming

11. Opening an Existing Project
Open VB .Net  Click the Open Project button
Open the Solution file with the sln file extention
Continue 

12. If the Form does not show in the Design window, double-click on the Form file in the Solution Explorer.

13. RGB Color Scheme Example: 255, 237, 169
Each number represents the amount of color of Red, Green, and Blue respectively
The higher the number, the more the color. e.g. 0, 0, 255 is blue.
The value of color range between 0 and 255 (00  FF in Hexadecimal)
Continue 

14. What Happens After Debug
After a successful Debug run, VB .Net creates an executable (exe) file in the Bin folder of the Project.

15. Designing the Inventory Application.
Tutorial 4
Designing the Inventory Application.

16. Naming Controls
Instead of using generic names created by VB .Net, use unique and informative names
E.g. TextBox1 vs. txtSalesAmount
The txt prefix indicates it is a TextBox control
“SalesAmount” tells it is something about sales amount
Sentence-style capitalization. Capitalize the first letter of each word instead of a blank space
Continue 

17. Suggested Prefixes for Controls

18. Label and Textbox Controls
Labels: Displaying information or output.
Textbox: Read in input data
Continue 

19. What Happens After Debug
After a successful Debug run, VB .Net creates an executable (exe) file in the Bin folder of the Project.

20. Introducing Code Programming
Tutorial 5
Introducing Code Programming

21. What is Class Building blocks of a program
Provided by VB .Net Framework Class Library
Template definition of the methods and variables in a particular kind of object
VB Windows forms inherit definitions from the System.Windows.Forms.Form class.

22. Object-Oriented Programming (OOP)
Programming language model
Organized around "objects" rather than "actions" and data rather than logic
Subclass and inheritance
Class 1
Class 2
Food
Fruit
Apple
Machine
Computer
Sources: techtarget.com
Continue 

23. Polymorphism: Actions or behaviors that share the same essence would have a common name even though they belong to different objects.
E.g., opening (action) a computer application (object) is different from opening a door in terms of operations. However, the name of the action for both objects is open since the idea is the same.
ComputerApplicatoin.Open
Door.Open

24. Structures of OOP Action Value Object.Behavior Object.Method
Object.Property
Object.Attribute

25. Val and Str Functions
Val: Returns a numeric value of an argument (string value)
E.g. Val(“123”)  123
Str: Returns a string value
E.g. Str(123)  “123”

26. Introducing Variables, Memory Concepts & Arithmetic
Tutorial 6
Introducing Variables, Memory Concepts & Arithmetic

27. Variables
Holds data
Controls for Design Programming, Variables for Code Programming
Text Property  Data  Variable
Manipulate data w/o showing to users
Store data w/o adding or using controls
Hold numbers, data & time, text, and etc.
Continue 

28. One type of variable can take the same type of data. E.g.
intCount = 15 (OK)
intCount = “Pat” (not OK)
intCount = “15” (not OK)
Must be declared. E.g.
Dim intCount As Integer
Dim sngPrice As Single
Continue 

29. Steps of Using Variables
Declare
Input: Assign a value by reading in from a control or other source
Process: Use or manipulate
Output: Put the value to a control or other object

30. Example 1: Dim intTotal As Integer intTotal = Val(txtTotal.Text)
intTotal = intTotal + 10
txtTotal.Text = Str(intTotal)

31. Example 2: Dim intTotal As Integer Dim intExtra As Integer
intTotal = Val(txtTotal.Text)
intExtra = 10
intTotal = intTotal + intExtra
txtTotal.Text = Str(intTotal)

32. Example 3: Dim intTotal As Integer Dim intExtra As Integer = 10
intTotal = Val(txtTotal.Text)
intTotal = intTotal + intExtra
txtTotal.Text = Str(intTotal)

33. Data Types of Variables
Memory Allocation
Value Range
Boolean
2 bytes
True or False.
Char
0 through (unsigned).
Date
8 bytes
0:00:00 on January 1, 0001 through 11:59:59 PM on December 31, 9999.
String
Depends on platform
0 to approximately 2 billion Unicode characters.
Short
-32,768 through 32,767.
Integer
4 bytes
-2,147,483,648 through 2,147,483,647.
Long
-9,223,372,036,854,775,808 through 9,223,372,036,854,775,807.
Single
E+38 through E-45 for negative values; E-45 through E+38 for positive values.
Double
E+308 through E-324 for negative values; E-324 through E+308 for positive values.
Decimal
16 bytes
0 through +/-79,228,162,514,264,337,593,543,950,335 with no decimal point; 0 through +/ with 28 places to the right of the decimal; smallest nonzero number is +/ (+/-1E-28).

34. Integer
Stored as 32-bit (4-byte) integers ranging in value from -2,147,483,648 through 2,147,483,647.
Provides optimal performance on a 32-bit processor, as the smaller integral types are slower to load and store from and to memory.
You can convert the Integer data type to Long, Single, Double, or Decimal without encountering a System.OverflowException error.

35. Single
Stored as IEEE 32-bit (4-byte) single-precision floating-point numbers ranging in value from E+38 through E-45 for negative values and from E-45 through E+38 for positive values. Single-precision numbers store an approximation of a real number.
Can be converted to the Double or Decimal data type without encountering a System.OverflowException error.

36. String
Stored as sequences of 16-bit (2-byte) numbers ranging in value from 0 through 65535
Each number represents a single Unicode character. A string can contain up to approximately 2 billion (2 ^ 31) Unicode characters
The first 128 code points (0–127) of Unicode correspond to the letters and symbols on a standard U.S. keyboard
The second 128 code points (128–255) represent special characters, such as Latin-based alphabet letters, accents, currency symbols, and fractions
The remaining code points are used for a wide variety of symbols

37. Prefixes for Variables
Data Type
Prefix
Boolean
bln
Integer
int
Byte
byt
Long
lng
Currency
cur
Short
sht
Date(time)
dtm
Single
sng
Double
dbl
String
str

38. Mathematical Operation ClassAve = TotalScores / NumOfStudents
Arithmetic Operators
Order
Operator
Mathematical Operation
Example 1
( )
Parentheses 2 ^
Exponentiation
CubicSpace = Length ^ 3
8 = 2 ^ 3 3 -
Negation
- Num1 4 * or /
Multiplication
Division
Total_Sales = Unit_Price * Count
ClassAve = TotalScores / NumOfStudents 5 \
Integer Division (DIV). The whole number portion of the answer in a division. The decimal position is dropped.
CarsCanFitIn = AreaOfLot \ CarDim
10 = 215 \  20
15 is leftover
Continue 

39. Mathematical Operation Example
Order
Operator
Mathematical Operation
Example 6
MOD
Integer Remainder Division. The whole number portion of a remainder in a division.
If the divider is greater than the number it is dividing, then the number become the remainder of the MOD division.
BoothSpace = 3 MOD 10
3 = 3 MOD 10 7 + or -
Addition
Subtraction
Total = Num1 + Num2
Profit = Sales - Expenses
&
String concatenation
FullName$ = First$ & Last$

40. Using Debugger
Demo

41. Introducing CheckBoxes & Message Dialogs
Tutorial 8
Introducing CheckBoxes & Message Dialogs

42. Basic Structure of Simple Codes
Declare variables for input and output controls
Use appropriate data types and prefixes
Input
Read in assign input values to input variables
Use Val conversion function for numeric input data
Process
Using input and other elements, calculate the result.
Ouput
Assign the result into the output control.

43. Example

44. Error Handling
Check error
Resolve error
Input
Process
Output

45. Code Structure with Error Handling
If [error condition] Then
do something, e.g. MessageBox
Else
input
process
output
End If
Or 

46. If [error condition] Then
do something, e.g. MessageBox
or Exit Sub
End If
input
process
output

47. Basic Structure If [condition] Then code(s) to be executed End If
If intGrade >= 60 Then
lblCourseResult.Text = “Passed”
Continue 

48. Coding with CheckBox If chkMembership.Checked Then or
If (chkMembership.Checked = True) Then
If (chkMembership.Checked = False) Then

49. Logical Operators And (AndAlso) Or Not Xor Logical Operator Meaning
Example
And (AndAlso)
Only if both conditions are true, then the result is true.
If [condition1] And [condition 2] Or
(OrElse)
If at least one condition is true, then the result is true
If [condition1] Or [condition 2]
Not
Negation of the condition.  If the condition is true, the result is false.  If the condition is false, then the result is true.
If Not [condition]
Xor
If one and only one of the conditions is true, then the result is true.  If all conditions are either true or false, then the result is false.  So, if all conditions are false, then the result is false.  If all conditions are true, then the result is also false. 
If blnStake Xor blnBurger Then
   strCustomer = “Satisfied”
End If
If a customer is served with either a stake or a burger, she is happy.  But if the customer is not served anything or both, then she is not happy. (too hungry or too full)

50. MessageBox Function
See textbook pages 174 and 175 for details

51. Introducing Do While & Do Until Loops & Repetition Statements
Tutorial 9
Introducing Do While & Do Until Loops & Repetition Statements

52. Do While Loop Do While [condition] action(s) Loop intCounter = 0
Do While (intCounter < 10)
intSumOfNumbersUpto10 += intCounter
intCounter += 1
Continue 

53. Repeats the actions as long as the condition is true
The condition must change, otherwise infinite loop will occur.
Within the loop add code(s) to change the condition that eventually become false

54. Do Until Loop Do Until [condition] action(s) Loop intCounter = 0
Do Until (intCounter >= 10)
intSumOfNumbersUpto10 += intCounter
intCounter += 1
Continue 

55. Repeats the actions as long as the condition is false
The condition must change, otherwise infinite loop will occur.
Within the loop add code(s) to change the condition that eventually become true

56. Coding with ListBox Remove items in the ListBox
lstStudents.Items.Clear( )
Class.SubClass.Behavior or
Add items to the ListBox
lstStudents.Items.Add (“Name” & ControlChars.Tab & ControlChars.Tab & “Course”)

57. Example Dim intCounter As Integer = 1
Dim intSumOfNumbersUpto10 As Integer = 0
Do While (intCounter < 10)
intSumOfNumbersUpto10 += intCounter
lstNumbersUpto10.Items.Add(“Number “ & intCounter & ControlChars.Tab & intSumOfNumbersUpto10)
intCounter += 1
Loop

58. What is a Computer? Examples? History A device capable of
Performing computation
Making logical decisions
Faster than human
Process data using computer programs

59. What is a computer program?
A set of instructions
a.k.a. application & software

60. Computer Organization
Input devices: keyboard, mouse, scanner, microphone, digital camera, & etc.
Output devices: monitor, printer, projector, device control, & etc.
Memory: Primary memory, RAM. Voatile.
Arithmetic & logic unit (ALU): Performs calculation, logical comparison, decision making.
Continue 

61. Central processing unit (CPU): Administrates process operations.
Secondary storage: Long-term storage of applications and data. E.g. hard drive, CD/DVD drive , & etc.

62. Three Types of Languages
Machine language: A natural language of a particular computer  machine dependent.
Continue 

63. High-level language: More convenient for programmers.
Assembly language: English-like. Translator program called assembler converts to machine language.
LOAD BASEPAY
ADD OVERPAY
STORE GROSSPAY
High-level language: More convenient for programmers.
GrossPay = BasePay OverPay

64. High level languages
Visual Basic .Net: Evolved from Visual Basic. GUI. Object Oriented.
Pascal, C, C++, C#
COBOL
Java
HTML?, JavaScript?, VBScript?

65. Language Relationships
Refer to

66. What is .Net
A set of software technologies for connecting information, people, systems, and devices.
Based on Web services—small building-block applications that can connect to each other as well as to other, larger applications over the Internet.
Continue 

68. Object Oriented Programming
Example: What if the replicater does not use OOP?
Structure:
Object.Property or Object.Attribute
Object.Behavior or Object.Method
Class: Related objects. E.g. car, wheel, hub, bolt, & etc.