VBA Training03

8/14/2019 VBA Training03

1/22

Visual Basic for ApplicationBasic Excel Macro (VBA) Orientation Course


2/22

Loading


3/22

Course Objectives:

To have a basic knowledge on VBA

To be able to learn the VBA Programming Fundamentals

To be able to make VBA programs


4/22

Getting Started with VBA Part 2:

Basic Programming Fundamentals

Conditionals & Branching

Loops

Arrays

Simple Debug & Error Handling

Second Program Assignment

Recap
http://recap/VBA%20Training03_p1.AVIhttp://recap/VBA%20Training03_p1.AVI


5/22


-uses conditional statements to change the flow or direction of program execution

-implement decisions in VBA


If Statements Select/Case Statements

If (condition) Then

Block of Code Statements

End if

If/Then Statement

-one way selection

Example
http://c/RalphDocs/rmamac/MIne/files/VBA%20Training/Passing.xlshttp://c/RalphDocs/rmamac/MIne/files/VBA%20Training/Passing.xls


6/22



If Statements

If/Then/Else Statement

-two way selection

If (condition) Then

Block of Code StatementsElse


End if

Example


7/22



If Statements

If/Then/ElseIfElse Statement

-multi way selection

If (condition) Then

Block of Code StatementsElseif


Else


End if

Example


8/22



Select/Case Statements

-more if statements; difficult to follow the logic of the program

Select Case Expression

Case condition1


Case condition2


Case Else


End Select

Note:

-multichoice conditions are easier to understand

Example


9/22


-Make a program the will ask the user to input the Sex of the Person

-Male = output message

-Female=output message

-Other=output message/ask user to input again

1. If Statement

2. Select/Case Statement

3. Loops

Assignment# 5

-Make a program the will ask the user to input Time IN

-determine the shiftcodes

-If or Select/Case and Loops

Assignment# 6


10/22


-repetition of a block of code for a specified number of times

Loops

For Loops Do Loops

-number of iteration for the loop is known

-definite iterations

For variable = start To end Step value

Block of Codes

Next variable

Example


11/22

Getting Started with VBA Part 2:Loops

Do Loops

-number of iteration for the loop is unknown

-indefinite iterations

-loop will execute as many times as needed until the condition is meet

Do

Block of codes

Loop Until (Condition)

Do Loop Until

-execute codes at least one and continues to loop if condition is false

Example


12/22

Getting Started with VBA Part 2:Loops>>Do Loops

Do Until (Condition)

Block of codes

Loop

Do Until Loop

-execute codes only is the condition is false

Do Loop While

Do

Block of codes

Loop While (Condition)

-execute codes at least one and continues to loop if condition is True

Example


13/22

Getting Started with VBA Part 2:Loops>>Do Loops

Do While (Condition)

Block of codes

Loop

Do While Loop

-execute codes only if condition is True

Exit For

Exit Do

-provides a way to exit a For loop

Exiting Loop

-provides a way to exit a Do loop

Example


14/22


-variable that can hold multiple values

-related sets of values to be stored in a variable

-single variable with many individual compartments

Arrays

One-Dimensional Arrays

-analogous to a single column in the spreadsheet

Dim myArray (number of elements) as Type

Dim myArray (10) as Integer

Multi-Dimensional Arrays-analogous to a multiple column in the spreadsheet

Dim myArray (number of elements) as Type

Dim myArray (10,2) as IntegerExample


15/22


Arrays

One-Dimensional Arrays

Dim Student (9) as String

0

1

32

5

6

4

7

8

9

Dim Student (1 TO 10) as Integer

1

3

2

5

6

4

7

8

910


16/22

Getting Started with VBA Part 2:Arrays

Dim Student (1,6) as Integer

Multi-Dimensional Arrays

0

1

32 64 50 1

G tti St t d ith VBA P t 2


17/22


Dynamic Arrays

-size is specified in the declaration

-cannot be changed while the program is running

-static array

Dim myArray (10) as Integer

Fixed Length Arrays

-length of an array is unknown

-cannot be changed while the programmin is running

Dim myArray ( ) as IntegerReDim myArray ( variable)

ReDim Preserve myArray ( variable)

Arrays



18/22


-result ofgrammatical, punctuation or spelling mistakes

Types of Programming Errors

Errors & Debugging

-Errors (bugs)-fixing errors

Syntax Errors

Run-time Errors

-errors occur during program execution

Logical Errors

-program doing something different to that of its intended meaning



19/22

Getting Started with VBA Part 2:Errors & Debugging

Debugging Tools

-Watch Window

-Immediate Window

-Local Window

-Step Out

-Step Over

-Step Into

-Toggle Breakpoint

-Reset

-Pause

-Play



20/22

Getting Started with VBA Part 2:Errors & Debugging

Error Handling

On Error Statement

-must be followed with instructions to VBA for deciding a course of action

when a runtime error is encountered

Resume Next

-sends the program execution to the next line of code



21/22


Program Exercises

- Make a program that will ask the User to input 10 Scores, determine the highest

and the lowest

- Make a program that will ask the user to any Input from the user, determine if

the input starts with a letter, number or a special character- Make a program that will ask for the users badge no., to output the users

complete name

- Make a program that that will ask for the users info, like name, age, address,

occupation, etc then output the results.

- Make a program that that will ask for the users password. The user is onlyallowed 3 tries to enter the password, or the program terminate the

application/or end the program.


22/22

Chapter 3

Chapter4

VBA Training03

Documents

Transcript of VBA Training03