When execution pauses, you’ll see a yellow arrow indicating the current line. The code on that line has not yet executed.
Public Class Form1 Private Sub btnCalculate_Click(sender As Object, e As EventArgs) Handles btnCalculate.Click Dim num1, num2, sum As Double ' Validating Input If Double.TryParse(txtNum1.Text, num1) And Double.TryParse(txtNum2.Text, num2) Then sum = num1 + num2 lblResult.Text = "Result: " & sum.ToString() Else MessageBox.Show("Please enter valid numbers.") End If End Sub End Class Use code with caution. 2. Control Structures: Prime Number Checker
: Accepts marks for multiple subjects and uses Select Case to assign grades (e.g., Distinction, First Class). vb net lab programs for bca students fix
Private Sub btnCheck_Click(sender As Object, e As EventArgs) Handles btnCheck.Click Dim n As Integer = Val(txtInput.Text) Dim isPrime As Boolean = True If n < 2 Then isPrime = False Else For i As Integer = 2 To Math.Sqrt(n) If n Mod i = 0 Then isPrime = False Exit For End If Next End If If isPrime Then lblResult.Text = n & " is a Prime Number." Else lblResult.Text = n & " is not a Prime Number." End If End Sub Use code with caution. 3. Array Operations: Find Maximum in Array
Private Sub btnCheck_Click(sender As Object, e As EventArgs) Handles btnCheck.Click Dim inputStr As String = TextBox1.Text Dim reverseStr As String ' Convert to lower case to make check case-insensitive inputStr = inputStr.ToLower() When execution pauses, you’ll see a yellow arrow
Take an input and determine if it is a prime number.
Private Sub btnSave_Click(sender As Object, e As EventArgs) Handles btnSave.Click Try con.Open() Dim cmd As New SqlCommand("INSERT INTO StudentInfo VALUES(@id, @name, @course)", con) Private Sub btnSave_Click(sender As Object, e As EventArgs)
Programs like "Check if a number is Even or Odd" or "Find the Greatest of Three Numbers" using If...Then...Else Loops & Series: