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Vb Net Lab Programs For Bca Students Fix [portable] Jun 2026

You likely deleted a button or textbox but kept the code for it. Double-check your Design View .

Use Microsoft Visual Studio (Community Edition 2019 or later is recommended). Project Setup for Console Applications: →right arrow →right arrow Select Visual Basic →right arrow Console Application (.NET Framework). Project Setup for GUI Apps: →right arrow →right arrow Select Visual Basic →right arrow Windows Forms App (.NET Framework).

Imports System.Data.SqlClient ' Use System.Data.OleDb for MS Access (.accdb) Public Class DatabaseForm ' Update the Connection String according to your SQL Server instance Private connString As String = "Data Source=(localdb)\MSSQLLocalDB;Initial Catalog=BCALabDB;Integrated Security=True" Private Sub LoadData() Using conn As New SqlConnection(connString) Dim query As String = "SELECT * FROM Students" Using adapter As New SqlDataAdapter(query, conn) Dim ds As New DataSet() Try conn.Open() adapter.Fill(ds, "Students") dgvData.DataSource = ds.Tables("Students") Catch ex As Exception MessageBox.Show("Error loading data: " & ex.Message) End Try End Using End Using End Sub Private Sub DatabaseForm_Load(sender As Object, e As EventArgs) Handles MyBase.Load LoadData() End Sub Private Sub btnInsert_Click(sender As Object, e As EventArgs) Handles btnInsert.Click Dim id As Integer Dim name As String = txtName.Text.Trim() If Not Integer.TryParse(txtId.Text, id) OrElse String.IsNullOrEmpty(name) Then MessageBox.Show("Please fill out all fields with valid data.") Exit Sub End If Dim query As String = "INSERT INTO Students (StudentId, StudentName) VALUES (@Id, @Name)" Using conn As New SqlConnection(connString) Using cmd As New SqlCommand(query, conn) cmd.Parameters.AddWithValue("@Id", id) cmd.Parameters.AddWithValue("@Name", name) Try conn.Open() Dim rows As Integer = cmd.ExecuteNonQuery() If rows > 0 Then MessageBox.Show("Record Inserted Successfully!") txtId.Clear() txtName.Clear() LoadData() ' Refresh GUI grid End If Catch ex As Exception MessageBox.Show("Database Error: " & ex.Message) End Try End Using End Using End Sub End Class Use code with caution. Compilation and Execution Blueprint vb net lab programs for bca students fix

Normalize the string by converting to lowercase and removing spaces/punctuation.

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) You likely deleted a button or textbox but

2 TextBoxes, 4 Buttons (Add, Sub, Mul, Div), 1 Label (Result).

Module Module1 Sub Main() Dim n, i As Integer Dim first As Integer = 0, second As Integer = 1, nextTerm As Integer Console.Write("Enter the number of terms: ") n = Console.ReadLine() Compilation and Execution Blueprint Normalize the string by

lblResult.Text = "Result: " & result.ToString() End Sub End Class

Take an input and determine if it is a prime number.