Allowing Numbers only in Textbox Using VB.Net


This tutorial is all about Allowing Numbers only in Textbox Using VB.Net. With this tutorial about Allowing Numbers only in Textbox Using VB.Net we set a restriction on textbox which allow us to enter only numbers. So let’s get started:

  • First is open the Visual Basic, Select File on the menu, then click New and create a new project.

  • Then a New Project Dialog will appear. You can rename your project, depending on what you like to name it. After that click OK

  • Then design your form like this just like what I’ve shown you below
    Select a Textbox and label.
  • Add this code to the TextBox KeyPress event.
    [vbnet]Private Sub TextBox1_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles TextBox1.KeyPress
    If Asc(e.KeyChar) <> 13 AndAlso Asc(e.KeyChar) <> 8 AndAlso Not IsNumeric(e.KeyChar) Then
    MessageBox.Show(“Please enter numbers only”)
    e.Handled = True
    End If
    End Sub[/vbnet]
  • After that, Click F5 to run the program.


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