Vb Net Lab Programs For Bca Students Fix Jun 2026

Use Val() or Double.TryParse() to avoid "Conversion from string to type Double is not valid" errors when a user leaves a textbox empty. 2. Simple Interest Calculator

The good: This package provides a comprehensive collection of lab programs that cover a wide range of topics in VB.NET. From basic programming concepts to advanced topics like database connectivity and file handling, it's all here. The programs are well-structured, easy to understand, and come with clear instructions. vb net lab programs for bca students fix

Private Sub btnCalc_Click(sender As Object, e As EventArgs) Handles btnCalc.Click Dim n1 As Double = Double.Parse(TextBox1.Text) Dim n2 As Double = Double.Parse(TextBox2.Text) Dim result As Double If rbAdd.Checked = True Then result = n1 + n2 ElseIf rbSub.Checked = True Then result = n1 - n2 ElseIf rbMul.Checked = True Then result = n1 * n2 ElseIf rbDiv.Checked = True Then If n2 <> 0 Then result = n1 / n2 Else MessageBox.Show("Cannot divide by zero") Exit Sub End If Else MessageBox.Show("Please select an operation") Exit Sub End If Use Val() or Double

Future work includes extending this approach to Windows Forms with multiple forms, LINQ to DataSet, and simple CRUD applications in VB.NET. From basic programming concepts to advanced topics like

Check if you have an infinite Do...While loop without an Application.DoEvents() .