Visual Basic 60 Practical Exercises Pdf Updated

Imports System.Net.Http
Imports System.Text.Json
Async Function FetchJsonAsync(Of T)(url As String) As Task(Of T)
    Using client = New HttpClient()
        Dim s = Await client.GetStringAsync(url)
        Return JsonSerializer.Deserialize(Of T)(s)
    End Using
End Function

Imports System.IO
Imports System.Text.Json
Sub SaveObject(Of T)(obj As T, path As String)
    Dim s = JsonSerializer.Serialize(obj, New JsonSerializerOptions With .WriteIndented = True)
    File.WriteAllText(path, s)
End Sub

Objective: Perform arithmetic operations using input from text boxes. Controls Needed: 2 TextBox (txtNum1, txtNum2), 4 CommandButton (cmdAdd, cmdSub, cmdMul, cmdDiv), 1 Label (lblResult).

Code:

Private Sub cmdAdd_Click()
    Dim num1 As Double
    Dim num2 As Double
    Dim result As Double
' Val() converts string text to a number
    num1 = Val(txtNum1.Text)
    num2 = Val(txtNum2.Text)
result = num1 + num2
    lblResult.Caption = "Result: " & result
End Sub
Private Sub cmdDiv_Click()
    ' Add error handling for division by zero
    If Val(txtNum2.Text) = 0 Then
        MsgBox "Cannot divide by zero!", vbCritical, "Error"
        Exit Sub
    End If
lblResult.Caption = "Result: " & Val(txtNum1.Text) / Val(txtNum2.Text)
End Sub

(Note: Write similar code for Subtraction and Multiplication). Learning Outcome: Variable declaration (Dim), data conversion (Val), and basic error handling.

Goal: Master the IDE, controls, and basic event handling. visual basic 60 practical exercises pdf updated

If you’re learning Visual Basic 6.0 — whether for legacy system maintenance, school coursework, or understanding classic event-driven programming — nothing beats practical application. That’s why I’ve curated an updated collection: “Visual Basic 60 Practical Exercises PDF (Updated)”.

You cannot learn VB6 by reading theory alone. The language is verbose but forgiving; its IDE is visual but quirky. A PDF of structured exercises serves three critical purposes:

The keyword here is "updated." While VB6 itself hasn't changed since SP6, best practices for installation on Windows 10/11, handling API declarations, and modern compatibility fixes have. Our PDF includes these modern tweaks. Imports System

Objective: Connect to a Microsoft Access Database and display data. Prerequisites: You need an Access database file (e.g., Sample.mdb) with a table named Employees. Controls Needed:

Setup Steps:

Linking the Textbox:

Code (Navigation Buttons): Add 4 CommandButtons: cmdFirst, cmdPrev, cmdNext, cmdLast.

Private Sub cmdFirst_Click()
    Adodc1.Recordset.MoveFirst
End Sub
Private Sub cmdPrev_Click()
    Adodc1.Recordset.MovePrevious
    If Adodc1.Recordset.BOF Then Adodc1.Recordset.MoveFirst
End Sub
Private Sub cmdNext_Click()
    Adodc1.Recordset.MoveNext
    If Adodc1.Recordset.EOF Then Adodc1.Recordset.MoveLast
End Sub
Private Sub cmdLast_Click()
    Adodc1.Recordset.MoveLast
End Sub

Learning Outcome: Basic database connection, Recordset navigation (BOF/EOF).

Objective: Draw random circles on the form upon clicking. Controls Needed: Just the Form itself (Name: Form1). Line ) and the Rnd() function.

Code:

Private Sub Form_Click()
    Dim x As Single, y As Single, r As Single
    Dim red As Integer, green As Integer, blue As Integer
' Generate random coordinates and color
    x = Rnd() * Me.ScaleWidth
    y = Rnd() * Me.ScaleHeight
    r = Rnd() * 500 + 100 ' Random radius
red = Rnd() * 255
    green = Rnd() * 255
    blue = Rnd() * 255
' Set fill color
    Me.FillColor = RGB(red, green, blue)
    Me.FillStyle = 0 ' Solid fill
' Draw the circle
    Me.Circle (x, y), r, RGB(red, green, blue)
End Sub

Learning Outcome: Using graphics methods (Circle, PSet, Line) and the Rnd() function.