Introduction to Visual Basic (Week 2)

Nov 16, 2012Download as PPTX, PDF2 likes546 views

Write the event procedure for the Command Button Click event to calculate and display the result. Test your application.

MS Visual Basic
O Is object-oriented programming
development system for creating Windows
Application
O It is an event driven

Parts of the VB Screen
O Blank form – where you can make your
own application’s interface
O Project Explorer Window - which displays
the files that are created in your
application
O Properties Window – displays the
properties of controls and objects that are
created in your application
O Toolbox – contains all control needed for
developing a Visual Basic Application

Form Design Window
• This is where the user interface is
actually designing

Code Editor Window
• Allow the user to enter or type the
programming statements for VB program

Form Layout
• Allows to specify the screen location of the forms
within a project

Steps in building the VB
Application

O Design the interface
O Set properties of the
controls (Objects)
O Write the event procedures

Control Properties
O Sets the properties for the control to
determine its appearance and how
it will work with the event procedure.

In the properties window
you can do the ff:
O Rename a caption
O Alter the appearance of the
form
O Change foreground and
background
O Change font type and size
O Enable or disable minimize
and maximize buttons
O Give special effects

Important points about setting
up your control…
O Set the Caption Property of a
control clearly so that a user knows
what to do with that command.
O Use a meaningful name for the
Name Property because it is easier
to write and read the event
procedure and easier to debug or
modify the programs later.

The Toolbox
O It contains all the control needed for
developing a Visual Basic
Application

Text Box

• is the standard control for accepting input
from the user as well as to display the output

In this example the text boxes
are used for input and the other
one is to display the sum of two
numbers that
are entered into the two text
boxes.

Label
O it is not only used to provide
instructions and guides to the
users, it can also be used to display
outputs. One of its most important
properties is Caption. Using the
syntax label.Caption, it can display
text and numeric data .

Command Button
O one of the most important controls as it is
used to execute commands. The most
common event associated with the
command button is the Click event, and
the syntax for the procedure is:

Private Sub Command1_Click ()
Statements
End Sub

Activity 1
Create and design your own user
interface in finding the Area of a
Rectangle.

Include: Textbox, Label and
Command button

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Introduction to Visual Basic (Week 2)

1. MS Visual Basic: An overview

2. MS Visual Basic O Is object-oriented programming development system for creating Windows Application O It is an event driven

3. Working with Visual Basic

4. Parts of the VB Screen O Blank form – where you can make your own application’s interface O Project Explorer Window - which displays the files that are created in your application O Properties Window – displays the properties of controls and objects that are created in your application O Toolbox – contains all control needed for developing a Visual Basic Application

5. Toolbox

6. Form Design Window • This is where the user interface is actually designing

7. Code Editor Window • Allow the user to enter or type the programming statements for VB program

8. Project Explorer Window

9. Properties Window

10. Form Layout • Allows to specify the screen location of the forms within a project

11. Steps in building the VB Application O Design the interface O Set properties of the controls (Objects) O Write the event procedures

12. Control Properties O Sets the properties for the control to determine its appearance and how it will work with the event procedure.

13. In the properties window you can do the ff: O Rename a caption O Alter the appearance of the form O Change foreground and background O Change font type and size O Enable or disable minimize and maximize buttons O Give special effects

14. Important points about setting up your control… O Set the Caption Property of a control clearly so that a user knows what to do with that command. O Use a meaningful name for the Name Property because it is easier to write and read the event procedure and easier to debug or modify the programs later.

15. The Toolbox O It contains all the control needed for developing a Visual Basic Application

17. Text Box • is the standard control for accepting input from the user as well as to display the output

18. In this example the text boxes are used for input and the other one is to display the sum of two numbers that are entered into the two text boxes.

19. Label O it is not only used to provide instructions and guides to the users, it can also be used to display outputs. One of its most important properties is Caption. Using the syntax label.Caption, it can display text and numeric data .

20. Command Button O one of the most important controls as it is used to execute commands. The most common event associated with the command button is the Click event, and the syntax for the procedure is: Private Sub Command1_Click () Statements End Sub

21. Activity 1 Create and design your own user interface in finding the Area of a Rectangle. Include: Textbox, Label and Command button

Introduction to Visual Basic (Week 2)

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