Dim i As Integer = 0 Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load Me.BackgroundImage = IMAGELIST.Images.Item(i) precedant.Enabled = False End Sub Private Sub suivant_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles suivant.Click precedant.Enabled = True If i < IMAGELIST.Images.Count - 1 Then i += 1 Me.BackgroundImage = IMAGELIST.Images.Item(i) If i = IMAGELIST.Images.Count - 1 Then suivant.Enabled = False End If End If End Sub Private Sub precedant_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles precedant.Click suivant.Enabled = True If i > 0 Then i -= 1 Me.BackgroundImage = IMAGELIST.Images.Item(i) If i = 0 Then precedant.Enabled = False End If End If End Sub