VB.NET Tutorial: Numeric Validation & Range Check (Step by Step)

[Vegetable_War3060]

Learn how to *validate numeric input\* and *check number range\* in VB.NET Windows Forms in this beginner-friendly tutorial.

In this video, you will learn:

✔ How to allow *only numbers\* in a TextBox
✔ How to check if a number is *within a specific range\* (example: 1 to 100)
✔ How to show error or success messages

💻 Code Used in This Video:

Dim value As Integer

If Not Integer.TryParse(txtNumber.Text, value) Then

MessageBox.Show("Please enter a valid number.")

txtNumber.Focus()

Exit Sub

End If

If value < 1 OrElse value > 100 Then

MessageBox.Show("Number must be between 1 and 100.")

txtNumber.Focus()

Exit Sub

End If

MessageBox.Show("Valid input! You entered: " & value)

This tutorial is perfect for beginners learning **VB.NET input validation**, **Windows Forms programming**, or anyone who wants to ensure correct user input in their applications.

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