Public Class frm1
Private Sub BT1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BT1.Click
LB1.Text = "Здравствуй Лена"
End Sub
Private Sub BT2_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles BT2.Click
LB1.Text = "Досвидания Лена"
End Sub
End Class