Vb Net Lab Programs For Bca Students Fix Exclusive Jun 2026

If isPrime Then MessageBox.Show(num & " is a Prime Number") Else MessageBox.Show(num & " is NOT a Prime Number") End If Else MessageBox.Show("Enter a valid integer") End If End Sub End Class

Private Sub btnCalc_Click(sender As Object, e As EventArgs) Handles btnCalc.Click Dim n1 As Double = Double.Parse(TextBox1.Text) Dim n2 As Double = Double.Parse(TextBox2.Text) Dim result As Double If rbAdd.Checked = True Then result = n1 + n2 ElseIf rbSub.Checked = True Then result = n1 - n2 ElseIf rbMul.Checked = True Then result = n1 * n2 ElseIf rbDiv.Checked = True Then If n2 <> 0 Then result = n1 / n2 Else MessageBox.Show("Cannot divide by zero") Exit Sub End If Else MessageBox.Show("Please select an operation") Exit Sub End If

Always wrap your removal logic in a conditional block checking if lstItems.SelectedIndex <> -1 (or >= 0 ) before attempting to delete. 4. Object-Oriented Programming (OOP) in VB.NET vb net lab programs for bca students fix

Visual Basic .NET (VB.NET) is a core component of the Bachelor of Computer Applications (BCA) curriculum. It bridges the gap between procedural programming and modern Object-Oriented Programming (OOP). However, lab sessions can be frustrating when simple syntax errors, logic flaws, or misconfigured UI controls break your application.

Always use StringComparison.OrdinalIgnoreCase . Without it, "Madam" will be marked as "Not a Palindrome" because of the capital 'M'. 4. Database Connectivity (ADO.NET) If isPrime Then MessageBox

Design a Windows Forms application to perform basic arithmetic operations (Addition, Subtraction, Multiplication, Division).

These troubleshooting strategies can be applied to many standard lab exercises. Here are some examples: It bridges the gap between procedural programming and

BCA curriculums generally focus on GUI fundamentals, database connectivity, and object-oriented concepts. Here are the core programs you must master: A. Basic GUI Application (Calculator)

Programs like "Check if a number is Even or Odd" or "Find the Greatest of Three Numbers" using If...Then...Else Loops & Series:

Students often hardcode a password like "Admin123," but the code fails because it doesn't account for how the user types it.

typically required for BCA students, organized from foundational logic to advanced GUI and database concepts. 1. Basic Console & Logic Programs