Vb Net Lab Programs For Bca Students Fix -

Imports System.Data.SqlClient

Double-clicking the button does nothing, even with code inside. Fix: Look at the top of the code file (Designer.vb). Ensure you see: Handles Button1.Click If missing, type it manually.

Perform Addition, Subtraction, Multiplication, and Division. vb net lab programs for bca students fix

1 TextBox ( txtInput ), 1 Button ( btnCheck ), 1 Label ( lblOutput ). Source Code

Armed with this guide and a methodical approach, you’ll move from “My program doesn’t work” to “I know exactly what’s wrong and how to fix it.” Now get coding—and when you hit that next error, come back to this guide. You’ve got this. Imports System

This example validates empty input, ensures numeric entry, and checks for negative numbers before performing the calculation.

If rbAdd.Checked = True Then result = num1 + num2 ElseIf rbSub.Checked = True Then result = num1 - num2 ElseIf rbMul.Checked = True Then result = num1 * num2 ElseIf rbDiv.Checked = True Then If num2 = 0 Then MessageBox.Show("Cannot divide by zero") Exit Sub End If result = num1 / num2 Else MessageBox.Show("Please select an operation") Exit Sub End If Perform Addition, Subtraction, Multiplication, and Division

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