Vb Net Lab Programs For Bca Students Fix -

Function IsPalindrome(ByVal input As String) As Boolean Dim clean As String = input.Replace(" ", "").ToLower() Dim reversed As String = StrReverse(clean) Return clean = reversed End Function Always ask the examiner if case matters. If not specified, force ToLower() . 4. Program: Student Grade Calculator (If-Else If Ladder) Common Problem: The program always shows "Grade F" or skips conditions.

' Step 2: SQL Query (Use Parameters to avoid SQL Injection and quote errors) Dim query As String = "INSERT INTO Students ([Name], [Age], [Course]) VALUES (?, ?, ?)" Dim cmd As New OleDbCommand(query, conn)

Remember the golden rule: Whether you are dealing with a misplaced Handles clause, a missing database parameter, or a logical off-by-one error, the solutions are standard and repeatable. vb net lab programs for bca students fix

Imports System.Data.OleDb Private Sub btnInsert_Click(sender As Object, e As EventArgs) Handles btnInsert.Click ' Step 1: Connection string Dim connString As String = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:\BCA_Lab\CollegeDB.accdb" Dim conn As New OleDbConnection(connString)

If marks >= 90 Then Grade = "A" If marks >= 80 Then Grade = "B" ' This will overwrite A! Correct: Function IsPalindrome(ByVal input As String) As Boolean Dim

Keep this guide bookmarked. When your VB.NET program throws a tantrum five minutes before submission, you will know exactly what to fix.

If marks >= 90 Then Grade = "A" ElseIf marks >= 80 AndAlso marks < 90 Then Grade = "B" ElseIf marks >= 70 Then Grade = "C" Else Grade = "F" End If Common Problem: The array outputs in the same order as input. Program: Student Grade Calculator (If-Else If Ladder) Common

Your nested loops are off by one. Use this standard bubble sort fix: