Hanya menginput angka di VB.net

 ubah teksbok menjadi KeyPress, disamping kanan atas,,,

 Private Sub textnpm_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles textnpm.KeyPress
        If Char.IsLetter(e.KeyChar) Then e.Handled = True

    End Sub

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