Module Module1 Sub Main() Console.Write("Enter a number: ") Dim num As Integer = Convert.ToInt32(Console.ReadLine()) Dim fact As Long = 1 For i As Integer = 1 To num fact *= i Next Console.WriteLine("Factorial of " & num & " is: " & fact) Console.ReadLine() End Sub End Module Use code with caution. 2. GUI Application: Simple Calculator

' Reading from file Try Dim reader As StreamReader = New StreamReader(path) text = reader.ReadToEnd() reader.Close() Console.WriteLine("File Content:") Console.WriteLine(text) Catch ex As Exception Console.WriteLine("Read Error: " & ex.Message) End Try

A validation application that checks a username and password, often displaying a "Success" message box. Bio-Data Form:

End Class

Standard BCA lab manuals generally cover these progressive categories: Basic Logic

Dim original As String = txtInput.Text Dim reversed As String = StrReverse(original) If original.Equals(reversed, StringComparison.OrdinalIgnoreCase) Then lblStatus.Text = "It is a Palindrome" Else lblStatus.Text = "Not a Palindrome" End If Use code with caution.

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Design a form to Insert, Update, Delete, and View student records in a database.

Public Sub DisplayStudents() Dim cmd As SqlCommand = New SqlCommand("SELECT * FROM Students", conn)

End Sub

Imports System.Data.OleDb Dim conn As New OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;Data Source=|DataDirectory|\StudentDB.accdb") Try conn.Open() ' Perform CRUD operations Catch ex As Exception MsgBox("Connection Failed: " & ex.Message) Finally conn.Close() End Try Use code with caution.