Why won't this work?

[Ian McKenzie]

OK - why won't this code enter a "T", an "F", or anything else in the listbox "lstViewScore"?

Private Sub lstViewScore_KeyDown(ByVal sender As System.Object, ByVal e As System.Windows.Forms.KeyEventArgs)

If e.KeyCode.Left Then
lstViewScore.Items.Add("T")
ElseIf e.KeyCode.Right Then
lstViewScore.Items.Add("F")
ElseIf e.KeyCode.Down Then
lstViewScore.Items.Add("Missing Item")
End If

End Sub

Ian