1.

Design an application to open a text file, modify it and save the changes using built in
dialog boxes.
2. Write a program to perform various arithmetic operations and implement exception
handling.
3. Design a Student Registration Application to store the student data in the database
using ADO.Net.
Examination:
1. One Question has to be given from the above list (Carries 45 Marks).
2. One more question has to be given by the examiner by his choice and that question
need not be in the list (Carries 35 Marks). Student has to answer and execute both
questions.
Marks Distribution:
Criteria Marks
Question from The List Examiner’s Question
Practical
Proper
Writing Program 25 20
Execution 20 15
Total 80
IA-Viva/Report 20
Total 100
You tube links

For Free Video classes on VB .Net Visit below link

https://www.youtube.com/playlist?list=PLgfNsCf7RQxdAG3_-RyIjaGO09rI8WFlA

1. Write a program to convert a given temperature from Fahrenheit to Celsius and viceversa.

Module Module1

Sub Main()

Dim temp As Integer

Dim tempF As Decimal
Dim tempC As Integer
Console.Write("Enter tempaerature: ")
temp = CInt(Console.ReadLine())
tempF = CDec(((temp - 32) * 5) / 9)
tempC = ((tempF - 32) / 1.8)
Console.WriteLine("Given temp: {0}", temp)
Console.WriteLine("Given temp to Fahrenheit: {0}", tempF)
Console.WriteLine("Fahrenheit to Celcius: {0}", tempC)
Console.ReadLine()

End Sub

End Module

OUTPUT

2. Write a program to accept roll number, name, marks in 2 subjects of a student

and calculate total,average and display the grade. (using nested if)

Module Module1

Sub Main()

Dim rollNo As Integer

Dim name As String
Dim mark1 As Integer
Dim mark2 As Integer
Dim total As Integer
Dim average As Decimal
Dim grade As String
Console.Write("Enter RollNo: ")
rollNo = CInt(Console.ReadLine())
Console.Write("Enter Name: ")
name = Console.ReadLine()
Console.Write("Enter Mark1(Max marks 100): ")
mark1 = CInt(Console.ReadLine())
Console.Write("Enter Mark2(Max marks 100): ")
mark2 = CInt(Console.ReadLine())

total = mark1 + mark1

average = total / 2

If (average > 90) Then

grade = "A"
ElseIf (average > 70) Then
grade = "B"
ElseIf (average > 50) Then
grade = "C"
ElseIf (average > 35) Then
grade = "D"
Else
grade = "E"
End If

Console.WriteLine("***Entered Details***")
Console.WriteLine("RollNo:{0}", rollNo)
Console.WriteLine("Name:{0}", name)
Console.WriteLine("Mark1:{0}", mark1)
Console.WriteLine("Mark2:{0}", mark2)
Console.WriteLine("Total:{0}", total)
Console.WriteLine("Average:{0}", average)
Console.WriteLine("Grade:{0}", grade)
Console.ReadLine()

End Sub

End Module

OUTPUT
3. Write a program to generate n random numbers .( using rnd() function)

Module Module1

Sub Main()

Dim range As Integer

Dim a As Byte
Console.Write("Enter no of random numbers you want: ")
range = CInt(Console.ReadLine())
Randomize()
For a = 1 To range
Console.WriteLine(CInt(range * Rnd()) + 1)
Next
Console.ReadLine()

End Sub

End Module

OUTPUT

4. Write a program to find frequency of a given character in a string .( using for each

loop) Module Module1

Sub Main()

Dim ipString As String

Dim ipChar As String
Dim singleChar As Char
Dim charFreq As Integer

Console.Write("Enter Name: ")

ipString = Console.ReadLine()
Console.Write("Enter the char to search:")
ipChar = Console.ReadLine()
For Each singleChar In ipString
If (singleChar = ipChar) Then
charFreq = charFreq + 1
End If

Next
Console.WriteLine("Frequencey of {0} is :{1}", ipChar, charFreq)
Console.ReadLine()

End Sub

End Module

OUTPUT:

5. Write a program to accept array elements and find the minimum and maximum among
them.

Module Module1

Sub Main()

Dim n, i, min, max As Integer

Console.Write("Enter the number of Elements : ")
n = CInt(Console.ReadLine())
Dim arr(n) As Integer
For i = 0 To n - 1
Console.Write("Enter the " & (i + 1).ToString & "th element: ")
arr(i) = CInt(Console.ReadLine())
Next
Console.WriteLine("Array Contains...")
For i = 0 To n - 1
Console.Write(arr(i) & " ")
Next
min = arr(0)
max = arr(0)
For i = 0 To n - 1
If arr(i) < min Then
min = arr(i)
End If

Next
For i = 0 To n - 1
If arr(i) > max Then
max = arr(i)
End If

Next
Console.WriteLine()
Console.WriteLine("Minimum=" & min)
Console.WriteLine("Maximum=" & max)
Console.ReadLine()

End Sub

End Module

OUTPUT:

Journal Programs

1. Design an application to create a login form and validate it using msgbox.

Public Class Form1

Dim userName As String

Dim password As String

Private Sub btnLogin_Click(sender As Object, e As EventArgs) Handles

btnLogin.Click

userName = txtUserName.Text
password = txtPwd.Text

If (userName = "raghu" And password = "gurumurthy") Then

MessageBox.Show("Login SuccessFul!, Credentials are Correct")
Else
MessageBox.Show("Login Failed!, Credentials are Incorrect")

End If

End Sub

Private Sub btnCancel_Click(sender As Object, e As EventArgs) Handles

btnCancel.Click
txtUserName.Text = String.Empty
txtPwd.Text = String.Empty
End Sub

End Class

OUTPUT:

2. Design an application to simulate the working of a font dialog box using combo box.

Public Class Lab2

Private Sub btnOK_Click(sender As Object, e As EventArgs) Handles btnOK.Click

Dim size As Single
Dim font As String
Dim fontStyle As String

size = CSng(cmbFSize.SelectedItem)
font = CStr(cmbFont.SelectedItem)
fontStyle = CStr(cmbFStyle.SelectedItem)

Select Case fontStyle

Case "Regular"
lblSample.Font = New Font(font, size, Drawing.FontStyle.Regular)
Case "Bold"
lblSample.Font = New Font(font, size, Drawing.FontStyle.Bold)
Case "Italic"
lblSample.Font = New Font(font, size, Drawing.FontStyle.Italic)
End Select

If chkStrikeout.Checked Then
lblSample.Font = New Font(font, size, Drawing.FontStyle.Strikeout)
chkUnderLine.Checked = False
End If

If chkUnderLine.Checked Then
lblSample.Font = New Font(lblSample.Font.FontFamily, size,
Drawing.FontStyle.Underline)
chkStrikeout.Checked = False
End If

End Sub

Private Sub Lab2_Load(sender As Object, e As EventArgs) Handles MyBase.Load

cmbFont.SelectedItem = "Arial"
cmbFStyle.SelectedItem = "Regular"
cmbFSize.SelectedItem = "8"
End Sub

Private Sub btnCancel_Click(sender As Object, e As EventArgs) Handles btnCancel.Click

cmbFont.SelectedItem = "Arial"
cmbFStyle.SelectedItem = "Regular"
cmbFSize.SelectedItem = "8"

chkStrikeout.Checked = False
chkUnderLine.Checked = False

lblSample.Font = New Font("Arial", 8, Drawing.FontStyle.Regular)

End Sub

End Class

OUTPUT:
3. Design a reminder application to schedule a meeting using calendar and input box.

Imports System.IO

Public Class Lab3

Dim m As MsgBoxResult
Dim t As String
Private Sub MonthCalendar1_DateSelected(sender As Object, e As
DateRangeEventArgs) Handles MonthCalendar1.DateSelected

t = MonthCalendar1.SelectionRange.Start.Month.ToString &
MonthCalendar1.SelectionRange.Start.Day.ToString

Try
If File.Exists(t & ".txt") = True Then
MonthCalendar1.Enabled = False
MonthCalendar1.Hide()
TextBox1.Enabled = True
TextBox1.Show()
btnSave.Enabled = True
btnSave.Show()
btnBack.Enabled = True
btnBack.Show()
TextBox1.Text = File.ReadAllText(t & ".txt")
Else
m = MsgBox("Would you like to have appointment for this date?",
MsgBoxStyle.YesNo)
If m = MsgBoxResult.Yes Then
MonthCalendar1.Enabled = False
MonthCalendar1.Hide()
TextBox1.Enabled = True
TextBox1.Show()
TextBox1.Text = ""
btnSave.Enabled = True
btnSave.Show()
btnBack.Enabled = True
btnBack.Show()
End If

End If
Catch ex As Exception
MsgBox(ex.Message)

End Try

End Sub

Private Sub btnSave_Click(sender As Object, e As EventArgs) Handles btnSave.Click

Try
If TextBox1.Text = "" Then
If File.Exists(t & ".txt") = True Then
File.Delete(t & ".txt")
End If
End If
If TextBox1.Text.Length > 0 Then
File.WriteAllText(t & ".txt", TextBox1.Text)
End If
Catch ex As Exception
MsgBox(ex.Message)
End Try
End Sub

Private Sub btnBack_Click(sender As Object, e As EventArgs) Handles btnBack.Click

TextBox1.Enabled = False
TextBox1.Hide()
btnSave.Enabled = False
btnSave.Hide()
btnBack.Enabled = False
btnBack.Hide()
MonthCalendar1.Enabled = True
MonthCalendar1.Show()
End Sub

Private Sub Lab3_Load(sender As Object, e As EventArgs) Handles MyBase.Load

Dim m1 As MsgBoxResult
t = MonthCalendar1.SelectionRange.Start.Month.ToString &
MonthCalendar1.SelectionRange.Start.Day.ToString
If Date.Today = MonthCalendar1.TodayDate And File.Exists(t & ".txt") = True Then
m1 = MsgBox("You have appointments today, wanna view them",
MsgBoxStyle.YesNo)
If m1 = MsgBoxResult.Yes Then
MonthCalendar1.Enabled = False
MonthCalendar1.Hide()
TextBox1.Enabled = True
TextBox1.Show()
btnSave.Enabled = True
btnSave.Show()
btnBack.Enabled = True
btnBack.Show()
TextBox1.Text = File.ReadAllText(t & ".txt")

End If

End If
End Sub

End Class
OUTPUT:
4. Design a screen saver application using timer control.

Public Class Form41

Private Function MarqueeText(ByVal Data As String)

Dim S1 As String = Data.Remove(0, 1)
Dim S2 As String = Data(0)
Return S1 & S2
End Function

Private Sub Form41_Load(sender As Object, e As EventArgs) Handles MyBase.Load

Timer1.Start()
End Sub

Private Sub Timer1_Tick(sender As Object, e As EventArgs) Handles Timer1.Tick

Label1.Text = MarqueeText(Label1.Text)
End Sub

Private Sub Form41_KeyPress(sender As Object, e As KeyPressEventArgs) Handles

MyBase.KeyPress
Timer1.Stop()
End Sub

Private Sub Form41_MouseHover(sender As Object, e As EventArgs) Handles

MyBase.MouseHover
Timer1.Stop()
End Sub
End Class
OUTPUT:

5. Design an application to create an MDI form having a menu with options- programs and
exit. The program menu should have sub menu items that calls separate child forms such as
Fibonacci and factorial.

Parent Form

Public Class Lab5

Private Sub FactorialToolStripMenuItem_Click(sender As Object, e As EventArgs)

Handles FactorialToolStripMenuItem.Click
Lab51.MdiParent = Me
Lab51.Show()
End Sub

Private Sub FibnociiToolStripMenuItem_Click(sender As Object, e As EventArgs) Handles

FibnociiToolStripMenuItem.Click
Lab52.MdiParent = Me
Lab52.Show()
End Sub
End Class

Child Form: 1

Public Class Lab51

Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click

Dim num As Integer
Dim i As Integer
Dim fact As Integer
num = CInt(TextBox1.Text)
fact = 1
For i = 1 To num
fact = fact * i
Next

Label2.Visible = True
Label2.Text = "Factorial of given range: " + CStr(fact)
End Sub

Private Sub Button2_Click(sender As Object, e As EventArgs) Handles Button2.Click

Label2.Visible = False
Label2.Text = String.Empty
TextBox1.Text = String.Empty
End Sub
End Class

Child Form: 2

Public Class Lab52

Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click

Dim num As Integer
Dim i As Integer
Dim a As Integer
Dim b As Integer
Dim c As Integer
a=0
b=1
num = CInt(TextBox1.Text)
Label2.Text = "Fib Series of Given range:" & Environment.NewLine
Label2.Visible = True
For i = 1 To num
Label2.Text += CStr(a) & Environment.NewLine
c=a+b
a=b
b=c

Next

End Sub

Private Sub Button2_Click(sender As Object, e As EventArgs) Handles Button2.Click

TextBox1.Text = String.Empty
Label2.Text = String.Empty
Label2.Visible = False
End Sub

End Class

OUTPUT:

Parent Form
Child Form1

Child Form 2

6. Design an Pizza Order application using check box and radio buttons and also generate a
bill for the same.
Public Class Lab6

Dim valid As Boolean

Dim price As Integer
Dim strbill As String

Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click

If ValidateForm() Then
If CalculatePrice() <> 0 Then
Label1.Text = "Price:" + CStr(price)
FillBillString()
MessageBox.Show(strbill)
End If
End If
End Sub

Private Sub Button2_Click(sender As Object, e As EventArgs) Handles

Button2.Click TextBox1.Text = String.Empty
CheckBox1.Checked = False
CheckBox2.Checked = False
Label1.Text = False
End Sub

Private Function ValidateForm() As Boolean

valid = True
If RadioButton1.Checked Or RadioButton2.Checked Or RadioButton3.Checked Then
valid = True
Else
MessageBox.Show("Size is not selected")
valid = False
Return valid
End If
If TextBox1.Text = String.Empty Then
MessageBox.Show("Address is manadatory")
valid = False
Return valid
End If
Return valid

End Function

Private Function CalculatePrice() As Integer

price = 0
If CheckBox1.Checked Then
price += 20
End If
If CheckBox2.Checked Then
price += 20
End If

If RadioButton1.Checked Then
price += 50
ElseIf RadioButton2.Checked Then
price += 70
ElseIf RadioButton3.Checked Then
price += 90
End If

Return price
End Function

Private Function FillBillString() As String

strbill = "Pizza Order Bill" & Environment.NewLine

strbill += "Adress" & Environment.NewLine
strbill += TextBox1.Text & Environment.NewLine

If CheckBox1.Checked Or CheckBox2.Checked Then

strbill += "Extra addons" & Environment.NewLine
If CheckBox1.Checked Then
strbill += "Cheese(Rs 20)" & Environment.NewLine
End If
If CheckBox2.Checked Then
strbill += "Topings(Rs 20)" & Environment.NewLine
End If
End If

strbill += "Size" & Environment.NewLine

If RadioButton1.Checked Then
strbill += "Small(Rs 50)" & Environment.NewLine
ElseIf RadioButton2.Checked Then
strbill += "Medium(Rs 70)" & Environment.NewLine
ElseIf RadioButton3.Checked Then
strbill += "Large(Rs 90)" & Environment.NewLine
End If

strbill += "Price" + CStr(price) & Environment.NewLine

strbill += "Thanks for Shopping with us"

Return strbill

End Function

End Class

OUTPUT:

Before Order Placing

After Order Placing

7. Design a color pallet application using scroll bars.

Public Class Lab7

Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click

Me.BackColor = Label4.BackColor
End Sub

Private Sub HScrollBar1_Scroll(sender As Object, e As ScrollEventArgs) Handles

HScrollBar1.Scroll, HScrollBar2.Scroll, HScrollBar3.Scroll
Label4.BackColor = Color.FromArgb(HScrollBar1.Value,
HScrollBar2.Value, HScrollBar3.Value)
NumericUpDown1.Value = HScrollBar1.Value
NumericUpDown2.Value = HScrollBar2.Value
NumericUpDown3.Value = HScrollBar3.Value

End Sub
End Class

OUTPUT:

Before Applying BG Colour

After Applying BG Colour

VB .Net Lab

8. Design an application which calculates EMI of a loan using functions.

Public Class Lab8

Dim principalAmount As Integer

Dim timeInMonths As Integer
Dim rateOfIntrest As Integer
Dim simpleIntrest As Integer
Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
Dim calculatedEMI As Integer
calculatedEMI = CalculateEMI()
MessageBox.Show("Total EMI: " + CStr(calculatedEMI) + " Rs")
End Sub

Private Function CalculateIntrest() As Integer

principalAmount = CInt(TextBox1.Text)
rateOfIntrest = CInt(TextBox2.Text)
timeInMonths = CInt(TextBox3.Text)
If RadioButton2.Checked Then
timeInMonths = (TextBox3.Text) * 12
End If
simpleIntrest = (principalAmount * timeInMonths * rateOfIntrest) / 100
Return simpleIntrest
End Function

Private Function CalculateEMI() As Integer

Dim totalAmount As Integer
Dim totalEMI As Integer
totalAmount = CInt(TextBox1.Text) + CalculateIntrest()
totalEMI = totalAmount / timeInMonths
Return totalEMI
End Function

End Class

OUTPU

2 Raghu Gurumurthy, MCA (Site : www.isat.guru www.raghug.in, Phone no:

VB .Net Lab

9. Design an application to implement various string operations such as reversing, case

conversion,length, concatenation.

Public Class Lab9

Dim enteredString As String

Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click

enteredString = TextBox1.Text
MessageBox.Show("Reverse of given string: " + StrReverse(enteredString))
End Sub

Private Sub Button2_Click(sender As Object, e As EventArgs) Handles Button2.Click

enteredString = TextBox1.Text
If (CheckBox1.Checked) Then
MessageBox.Show("Lowercase string: " + enteredString.ToLower())
Else
MessageBox.Show("Uppercase string: " + enteredString.ToUpper())
End If
End Sub

Private Sub Button4_Click(sender As Object, e As EventArgs) Handles Button4.Click

enteredString = TextBox1.Text
MessageBox.Show("String length: " + CStr(enteredString.Length()))

End Sub

Private Sub Button3_Click(sender As Object, e As EventArgs) Handles Button3.Click

enteredString = TextBox1.Text
Dim strToConcatenate = TextBox2.Text
MessageBox.Show("String Concatenation: " + String.Concat(enteredString,
strToConcatenate))
End Sub
End Class

OUTPU

2 Raghu Gurumurthy, MCA (Site : www.isat.guru www.raghug.in, Phone no:

VB .Net Lab

10. Write a program to accept sides of a triangle and then find its area, perimeter and type of
triangle using classes (OOP).

For Triangle reference visit below link

https://www.mathwarehouse.com/geometry/triangles/triangle-types.php

Public Class Lab10

Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click

Dim objTriangle1 As Triangle = New Triangle()
objTriangle1.side1 = CInt(TextBox1.Text)
objTriangle1.side2 = CInt(TextBox2.Text)
objTriangle1.side2 = CInt(TextBox3.Text)
objTriangle1.angle1 = CInt(TextBox4.Text)
objTriangle1.angle2 = CInt(TextBox5.Text)
objTriangle1.angle2 = CInt(TextBox6.Text)

Dim objTriangle2 As Triangle = New Triangle(objTriangle1)

MessageBox.Show("Perimter:" + CStr(objTriangle2.perimeterOfTriangle()) &
Environment.NewLine + "Area: " + CStr(objTriangle2.areaOfTriangle()) &
Environment.NewLine + "Type of Triangle :" + CStr(objTriangle2.whatKindOfTriangle()))
End Sub
End Class

Triangle Class

Public Class Triangle

Public angle1 As Integer

Public angle2 As Integer
Public angle3 As Integer
Public side1 As Integer
Public side2 As Integer
Public side3 As Integer
Public Sub New()

End Sub
Public Sub New(objTri As Triangle)
angle1 = objTri.angle1

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VB .Net Lab

angle2 = objTri.angle2
angle3 = objTri.angle3
side1 = objTri.side1
side2 = objTri.side2
side3 = objTri.side3
End Sub
Public Function areaOfTriangle() As Integer
Dim perimeter As Integer
Dim area As Integer
perimeter = perimeterOfTriangle()
area = Math.Sqrt(perimeter * (perimeter - side1) * (perimeter - side2) * (perimeter -
side3))
Return area
End Function

Public Function perimeterOfTriangle() As Integer

Dim perimeter As Integer
perimeter = side1 + side2 + side3
Return perimeter
End Function

Public Function whatKindOfTriangle() As String

Dim kindOfTriangle As String
kindOfTriangle = "Not Defined"
If (angle1 = 90 Or angle2 = 90 Or angle2 = 90) Then
kindOfTriangle = "Right Angle Triangles"
ElseIf angle1 = angle2 = angle2 Then
kindOfTriangle = "Equilateral Triangle"
ElseIf ((angle1 = angle2) Or (angle2 = angle3) Or (angle1 = angle3)) Then
kindOfTriangle = "Isosceles Triangle"
ElseIf ((side1 = side2) Or (side2 = side3) Or (side1 = side3)) Then
kindOfTriangle = "Scalene Triangle"
ElseIf ((side1 = side2) Or (side2 = side3) Or (side1 = side3)) Then
kindOfTriangle = "Scalene Triangle"
ElseIf (angle1 < 90 And angle2 < 90 And angle2 < 90) Then
kindOfTriangle = "Acute Triangle"
End If
Return kindOfTriangle
End Function

End Class

OUTPUT:

2 Raghu Gurumurthy, MCA (Site : www.isat.guru www.raghug.in, Phone no:

VB .Net Lab

11. Design an application to open a text file, modify it and save the changes using built in
dialog boxes.
Public Class Lab11

Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click

SaveFileDialog1.ShowDialog()
SaveFileDialog1.Title = "SAVE TEXT"
SaveFileDialog1.InitialDirectory = "D:\SavedContent"
Dim location As String
location = SaveFileDialog1.FileName
If System.IO.File.Exists(location) Then
My.Computer.FileSystem.WriteAllText(location, "" & TextBox1.Text, True)
Else
My.Computer.FileSystem.WriteAllText(location & ".txt", "" & TextBox1.Text, True)
End If
End Sub

Private Sub Button2_Click(sender As Object, e As EventArgs) Handles Button2.Click

OpenFileDialog1.InitialDirectory = "D:\SavedContent"
If OpenFileDialog1.ShowDialog = Windows.Forms.DialogResult.OK Then
TextBox1.Text = My.Computer.FileSystem.ReadAllText(OpenFileDialog1.FileName)
End If

End Sub

Private Sub Button3_Click(sender As Object, e As EventArgs) Handles Button3.Click

TextBox1.Text = String.Empty
End Sub

End Class

OUTPUT:

2 Raghu Gurumurthy, MCA (Site : www.isat.guru www.raghug.in, Phone no:

VB .Net Lab

Before Writing To Text File

While Writing to text file

While Opening to text file

2 Raghu Gurumurthy, MCA (Site : www.isat.guru www.raghug.in, Phone no:

VB .Net Lab

12. Write a program to perform various arithmetic operations and implement exception
handling.

Public Class Lab12

Dim result As String
Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click,
Button2.Click, Button3.Click, Button4.Click, Button5.Click

Try

Dim operand1 As Integer

Dim operand2 As Integer

operand1 = TextBox1.Text
operand2 = TextBox2.Text
Dim clickedButton = TryCast(sender, Button)
If clickedButton IsNot Nothing Then
Dim tagValue As Integer
tagValue = CInt(clickedButton.Tag)

Select Case tagValue

Case 1
result = operand1 + operand2
MessageBox.Show("Sum is:" + CStr(result), "Result")
Case 2
result = operand1 - operand2
MessageBox.Show("Difference is:" + CStr(result), "Result")
Case 3
result = operand1 * operand2
MessageBox.Show("Difference is:" + CStr(result), "Result")
Case 4
result = operand1 / operand2
MessageBox.Show("Quotent is:" + CStr(result), "Result")
Case 5
result = operand1 Mod operand2
MessageBox.Show("Reaminder is:" + CStr(result), "Result")

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VB .Net Lab

End Select

End If
Catch e1 As
DivideByZeroException result =
e1.ToString
MessageBox.Show("Exception Caught:" + result, "Exception")
Catch e2 As IO.IOException
result = e2.ToString
MessageBox.Show("Exception Caught:" + result, "Exception")
Catch e3 As InvalidCastException
result = e3.ToString
MessageBox.Show("Exception Caught:" + result, "Exception")
Finally
MessageBox.Show("Finally Block:" + result, "Finally")
End Try

End Sub

End Class

OUTPUT:

13. Design a Student Registration Application to store the student data in the database using

2 Raghu Gurumurthy, MCA (Site : www.isat.guru www.raghug.in, Phone no:

VB .Net Lab

ADO.Net.

2 Raghu Gurumurthy, MCA (Site : www.isat.guru www.raghug.in, Phone no:

VB .Net Lab

Imports System.Data.SqlClient

Public Class Lab13

Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click

If AddStudent() > 0 Then
MessageBox.Show("Student record inserted succesfully", "Result")
Else
MessageBox.Show("Error occured during Student record insertion", "Result")
End If
End Sub

Private Sub Button2_Click(sender As Object, e As EventArgs) Handles

Button2.Click TextBox1.Text = String.Empty
TextBox2.Text = String.Empty
TextBox3.Text = String.Empty
TextBox4.Text = String.Empty
RadioButton2.Checked = True

End Sub

Private Function AddStudent() As Integer

Dim con As New SqlConnection
Dim cmd As New SqlCommand
Dim gender As String
Dim result As Integer
result = 0
gender = "Female"
If RadioButton1.Checked Then
gender = "Male"
End If
Try
con.ConnectionString = "Data Source=USER-PC\SQLEXPRESS;Initial
Catalog=VBLAB;Integrated Security=True"
con.Open()
cmd.Connection = con
cmd.CommandText = "INSERT INTO
Student(NAME,USN,ADDRESS,GENDER,BGROUP) VALUES('" + TextBox1.Text + "','" +
TextBox2.Text + "','" + TextBox3.Text + "','" + gender + "','" + TextBox4.Text + "')"
result = cmd.ExecuteNonQuery()

Catch ex As Exception
MessageBox.Show("Error while inserting record on table..." & ex.Message, "Insert
Records")
Finally
con.Close()
End Try
Return result
End Function
End Class

OUTPUT:

3 Raghu Gurumurthy, MCA (Site : www.isat.guru www.raghug.in, Phone no:

VB .Net Lab

3 Raghu Gurumurthy, MCA (Site : www.isat.guru www.raghug.in, Phone no: