I need the on in vb.net

Code:
Dim hDoc As MSHTML.HTMLDocument
Dim hInp As MSHTML.HTMLInputElement

Private Sub Command1_Click()
    Set hInp = hDoc.getElementById("upc")
    hInp.focus
    hInp.Value = "07800008846"
    SendKeys "{ENTER}", True
End Sub

Private Sub Form_Load()
    WebBrowser1.Navigate2 "http://www.upcdatabase.com/nocheckdigit.pl"
End Sub

Private Sub Form_Resize()
    If Me.WindowState <> vbMinimized Then
        WebBrowser1.Move 0, 0, Me.ScaleWidth, Me.ScaleHeight - 450 'Make adjustment for command button
    End If
End Sub

Private Sub WebBrowser1_NavigateComplete2(ByVal pDisp As Object, URL As Variant)
    Set hDoc = WebBrowser1.Document
End Sub