Practicalfileofvb workshop

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.

Properties

4

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

Property Description

5

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

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

Labels

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

Step 3: Execute

16

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?

21

Step2:

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

Step 3:

Execute

23

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

Execute

27

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

Execute

30

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

Execute

35

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

Execute

38

Application 10

To print the series

1

1 2

1 2 3

1 2 3 4

1 2 3 4 5

Coding

Private Sub Form_Click()

For r = 1 To 5

For c = 1 To r

Print c;

Next

Print

Next

End Sub

39

Execute

40

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

45

Execute

46

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

Execute

52

53

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