Vb Net Lab Programs For Bca Students Fix -

Visual Basic .NET (VB.NET) is an object-oriented programming language implemented on the .NET framework. For BCA students, it is crucial to understand Event-Driven Programming—where code executes in response to user actions (like clicks) rather than a linear top-down flow.

Objective: Use ListBox for font names, TrackBar for font size, RadioButton for color selection to dynamically change text appearance in a Label.

Learning Outcome: Event handling for dynamic UI updates. vb net lab programs for bca students fix

Objective: To check if a string reads the same forwards and backwards (e.g., "madam").

Code:

Public Class Form1
    Private Sub btnCheck_Click(sender As Object, e As EventArgs) Handles btnCheck.Click
        Dim inputStr As String = txtInput.Text
        Dim reverseStr As String = StrReverse(inputStr)
If String.Compare(inputStr, reverseStr, False) = 0 Then
            MessageBox.Show("The string is a Palindrome.")
        Else
            MessageBox.Show("The string is NOT a Palindrome.")
        End If
    End Sub
End Class

Note: StrReverse is a built-in VB.NET function. In other .NET languages, you might use Array.Reverse.

Common Problem: The series shows "0 1 1 2 3" but duplicates the last number or misses the first. Visual Basic

The Fix – Correct Logic:

Dim a As Integer = 0, b As Integer = 1, c As Integer, i As Integer
Dim n As Integer = Val(TextBox1.Text) ' Number of terms
ListBox1.Items.Clear()
ListBox1.Items.Add(a) ' First term
ListBox1.Items.Add(b) ' Second term
For i = 3 To n
c = a + b
ListBox1.Items.Add(c)
a = b
b = c
Next
 Objective: To check if a string reads the

Key Fix: Ensure you add the first two terms before the loop. Never put them inside.