programa que permite ver imagenes cada 20 segundos hecho por monica gabriela segundo gonzalez

Public Class Form1

    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

        Timer1.start()

    End Sub

    Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick

        Label1.Text = TimeOfDay

        Label2.Text = TimeOfDay.Second

    End Sub

    Private Sub Label2_textchanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles Label2.TextChanged

        Dim cambiar As VariantType

        cambiar = Label2.Text

        Select Case cambiar

            Case 0 To 20

                PictureBox1.BackgroundImage = My.Resources.uno

            Case 21 To 40

                PictureBox1.BackgroundImage = My.Resources.dos

            Case 41 To 59

                PictureBox1.BackgroundImage = My.Resources.tres

        End Select

    End Sub

End Class