Visual basic

Practical File

Workshop
On
Visual Basic

Submitted To: Submitted By:
Prof Anil Sharma Alisha Korpal

BCA

1

INDEX
Sno Topic Page no
1 Introduction to VB 3

2 Tool Box 4

3 Property 5

4 Description -- Properties 6

5 Description -- Controls 7

6 Application 1: Showing labels and text boxes 8

7 Description -- Command button 9

8 Application 2: To Perform Arithmetic Operations on two numbers 10

9 Description – Controls 13

10 App 3 : Detail of any option click 14

11 App 4 : Application Form 17

12 Description -- control 20

13 App 5: Traffic lights 21

14 App 6: Getting marks of student and print result in another form 24

15 App 7: Moving the list item across two different lists 28

16 App 8: Formatting Text 31

17 App 9: with the help of menus perform Arithmetic operation 36

18 App 10: Print the series on form 39

19 App 11: Puzzle 41

20 App 12: Print table on the Form 47

21 App 13: Getting a string input from user and move it along border 49

2

Introduction to VB
Visual basic is an event driven programming. In event driven programming, the interface
components have the ability to recognize user events and then, if possible a response is given
to the event occurred. The response of identical interface components to an event can
different in different situations. In addition, an interface component may also respond to
multiple events.

In event driven programming an application is built up as a series of response to user event.
For instance, you may consider a calculator application, which is good example of an
application that is event driven.

Featues
• It is successor of BASIC language.

• VB supports event driven programming.

• Common Programming Platform VB provides a common programming platform
across all MS – Office applications.

• Quick Development VB offers many tools that provide a quick and easy way to
develop applications.

• Wizards VB also provides many wizards that can automate tasks or even automate
coding.

• Quick Error Detection /Correction The VB development environment provides
tools for quick editing, testing and debugging

3

Tool Box
The toolbox is a collection of tools that act as a repository of controls you can place on a
form.

4

Properties
Each property has a name so we can work with a particular property, and each property has a
value that either we or Visual Basic assigns. For example, Visual Basic always names the
first command button we add to a project Command1. Therefore, the Name property for the
first command button holds the value Command1

5

Property Description
Alignment : Determines whether text on the control, such as a label or
command button, is left-justified, centered, or right-justified on
the control.
BackColor : Specifies the color of the control's background, which you
select from a palette of colors when you open the property drop-
down list box of colors.
BorderStyle : Determines whether the control has a border around it.
Caption : Lists the text displayed on the control.
Enabled : Set by a drop-down list box, this property is either True if we
want the control to respond to the user or False if we want
the control not to respond to the user.
Font : Displays a Font dialog box from which you can set various font
properties, such as size and style, for a control's text.
ForeColor : Specifies the color of the control's foreground, which you select
from a palette of colors when we open the property's drop-down
list box of colors.
Height : Specifies the number of twips high the control is.
Left : Indicates the starting twip from the left edge of the form where
the control appears.
Mouse Pointer : Determines the shape of the mouse cursor when the user
moves the mouse over the control at runtime.
Name : Specifies the name of the control. As you saw in yesterday's
lesson, the Properties window displays the .
Tooltip Text : Holds the text that appears when the user rests the mouse
Cursor over the control at runtime (similar to ScreenTips).

6

CONTROLS
1. Selection Pointer
Selection pointer is used to select the pointer control from the tool box.
2. Label
The label control displays text. Although your user cannot alter the text that
appears on a label, you can, at runtime, change the label's text through code.
3. The Text Box Control
Use a text box control when we want the user to type something, such
as an answer to a prompt, when we want to collect values, such as
name and address information. Often, a default value is helpful for
users, and Visual Basic program can supply an initial value.

7

Application 1

Labels

NOTE : Here no coding will be done because we are simply putting the label,
text box controls on the form so, there output will be like the above program .

8

4. Command Button
Command button is used to perform some kind of
operations although other controls can also perform.
This button is used to begin, interrupt or end a process.

9

Application 2:
WAP to add, subtract, multiply and divide two numbers?

Step 1:
Create a form

10

Step 2:
Start the coding

Private Sub cmd_Click()
Me.sum.Text = Val(txtnum1.Text) + Val(txtnum2.Text)
Me.sub.Text = Val(txtnum1.Text) - Val(txtnum2.Text)
Me.mul.Text = Val(txtnum1.Text) * Val(txtnum2.Text)
Me.div.Text = Val(txtnum1.Text) / Val(txtnum2.Text)
End Sub

Private Sub Form_Load()
MsgBox (" Hello Welcome to perform operations")
End Sub

11

Step 3:
Execute the program

12

5. Check Box
Check boxes are used to allow a user select multiple choices.
For example a student can choose any five subjects out of
available 7 subjects. Now the subject chosen the 5 subject
he/she wants to choose they can.
6. Option Box
An option button also known as radio button is used to display
an option that can be turned on or off. Usually option buttons
are used for a group of options wherefrom user can select just
one.
For example a student can have option for choosing the
medium either Hindi or English so the student has to choose the
one option.
7. Frames
A frame control is used to separate different group of
controls on form.
8. Combo Box
A combo box control combines the feature of a text box and a
list box.
9. List Box
A list box control display a list of item from which the user can
select one or more items

13

Application 3
WAP to show the option button?
Step 1:
Make a form

14

Step 2:
Coding

private Sub Command1_Click()
If Option1.Value = True Then
MsgBox (" An input device used to type and enter data")
ElseIf Option2.Value = True Then
MsgBox (" An input device used for clicking various things")
MsgBox (" An output device used to display data")
MsgBox (" An output device used to print data")
End If
End Sub

15

Application 4
WAP to make an application Form?

17

Step 2

Private Sub Command1_Click()

MsgBox (txtname.Text & Cmbqual.Text & ",your data has been submited")

End Sub


txtname.Text = ""

Me.Option1.Value = True

Cmbqual.Text = "B.A"

chkmusic.Value = False

chkpaint.Value = False

chkread.Value = False

End Sub

18

Step 3:

Execute

19

10. Timer:
The timer control is an invisible control which is added to form
if some task is to be repeated regular intervals

11.Shapes
The shape control is a graphical control that is used to display a
rectangle, oval, circle or rounded square.

20

Application 5:

WAP to show the working of timer?

Step2:
21

Coding
Private Sub Timer1_Timer()
If Shape1.Visible Then
Shape2.Visible = True
Shape1.Visible = False
ElseIf Shape2.Visible Then
Else Shape3.Visible Then
End If
End Sub

22

Application 6:
Getting the particulars form the user and printing the result in
another frame?

24

Private Sub cmbstream_Click()
If cmbstream.ListIndex = 0 Then
Me.lblsub1.Caption = "Economics"
Me.lblsub2.Caption = "Accounts"
Me.lblsub3.Caption = "Law"
Me.lblsub1.Visible = True
Me.txtm1.Visible = True
ElseIf cmbstream.ListIndex = 1 Then
Me.lblsub1.Caption = "C"
Me.lblsub2.Caption = "VB"
Me.lblsub3.Caption = "Java"
End If
End Sub

Private Sub cmdexit_Click()
End
End Sub

Private Sub cmdres_Click()
Me.lblname.Caption = "Name: " + Me.txtname.Text
Me.lblroll.Caption = "Roll No.: " + Me.txtroll
Me.lblstream.Caption = "Stream: " + Me.cmbstream.Text
Me.lblm1.Caption = Me.lblsub1.Caption + ": " + Me.txtm1

25

If ((Val(txtm1.Text)+Val(txtm2.Text)+Val(txtm3.Text)) / 3)>=40 Then
Me.lblres.Caption = "Pass " & "(" & ((Val(txtm1.Text) +
Val(txtm2.Text) + Val(txtm3.Text)) / 3) & "%)"
Else
Me.lblres.Caption = "Fail " & "(" & ((Val(txtm1.Text) +
Val(txtm2.Text) + Val(txtm3.Text)) / 3) & "%)"
End If
Me.Width = 9500
End Sub

Me.lblsub1.Visible = False
Me.txtm1.Visible = False
Me.Width = 5000
End Sub

26

Application 7:
Moving the list item across two different lists.

28

Coding

End
End Sub

List2.AddItem (List1.Text)
List1.RemoveItem (List1.ListIndex)
End Sub

List1.AddItem (List2.Text)
List2.RemoveItem (List2.ListIndex)
End Sub

29

Application 8:
Changing the text and applying font

31

Coding
Private Sub Check1_Click()
If Check1.Value = 1 Then
Text1.FontBold = True
Else
Text1.FontBold = False
End If
End Sub

Text1.FontItalic = True
Else
Text1.FontItalic = False
End If
End Sub

Text1.FontUnderline = True
Else
Text1.FontUnderline = False
End If
End Sub

Private Sub Combo1_Click()
If Combo1.ListIndex = 0 Then
Text1.FontSize = Combo1.Text
ElseIf Combo1.ListIndex = 1 Then

32

End If
End Sub

Private Sub Combo2_click()
If Combo2.ListIndex = 0 Then
Text1.FontName = Combo2.Text
End If
End Sub

Combo2.AddItem "Times New Roman"
Combo2.AddItem "Arial"
Combo2.AddItem "Shruti"
Combo2.AddItem "Monotype Corsiva"
End Sub

Private Sub Option1_Click()
Text1.BackColor = vbCyan
End If
End Sub

33

Text1.BackColor = vbBlack
End If
End Sub

Text1.BackColor = vbYellow
End If
End Sub

34

Application 9:
With the help of menus perform arithmetic operations

36

Coding

Private Sub add_Click()
Me.answ.Text = Val(txtnum1.Text) + Val(txtnum2.Text)
End Sub

Private Sub divi_Click()
Me.answ.Text = Val(txtnum1.Text) / Val(txtnum2.Text)
End Sub

Private Sub min_Click()
Me.answ.Text = Val(txtnum1.Text) - Val(txtnum2.Text)
End Sub

Private Sub mult_Click()
Me.answ.Text = Val(txtnum1.Text) * Val(txtnum2.Text)
End Sub

37

Application 10
To print the series
1
12
123
1234
12345

Coding

Private Sub Form_Click()
For r = 1 To 5
For c = 1 To r
Print c;
Next
Print
Next
End Sub

39

Application 11
To make a puzzler

41

Coding
If Command2.Caption = "" Then
Command2.Caption = Command1.Caption
Command1.Caption = ""
ElseIf Command4.Caption = "" Then
End If
End Sub

End If
End Sub

End If
End Sub

42

End If
End Sub

End If
End Sub


43

End If
End Sub

End If
End Sub

End If
End Sub

44

End If
End Sub

Execute
45

Application 12:
Print a table on the form

47

Coding


For k = 1 To 10
Print Val(Text1.Text) * k
Next

End Sub

Execute

48

Application 13
Getting a string input from user and move it along with the border

49

Coding

Private Sub cmdstart_Click()
Me.Label1.Caption = Me.Text1.Text
Me.Timer1.Enabled = True
End Sub

Private Sub cmdstop_Click()
Me.Timer1.Enabled = False
End Sub

End
End Sub

Me.Label1.Left = 0
End Sub

Private Sub Text1_Click()
Me.Text1.Text = ""
Me.Text1.SetFocus
End Sub

If Me.Label1.Left <= 6600 Then
Me.Label1.Left = Me.Label1.Left + 10
ElseIf Me.Label1.Top <= 6600 Then
Me.Label1.Top = Me.Label1.Top + 10
Else
Timer1.Enabled = False

50

Timer2.Enabled = True
End If
End Sub

If Me.Label1.Left >= 0 Then
Me.Label1.Left = Me.Label1.Left - 10
ElseIf Me.Label1.Top >= 0 Then
Me.Label1.Top = Me.Label1.Top - 10
Else
Timer1.Enabled = True
Timer2.Enabled = False
End If
End Sub

51

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