Récuperer l'index d'une LISTBOX

<form id="form1" runat="server">

<div>

<asp:DropDownList ID="DropDownList1" runat="server" AutoPostBack="true">

</asp:DropDownList>

<asp:Literal ID="Literal1" runat="server"></asp:Literal>

</div>

</form>

Protected Sub DropDownList1_SelectedIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles DropDownList1.SelectedIndexChanged

Literal1.Text = "Vous avez selectioné l'element " & Me.DropDownList1.SelectedIndex & " sa valeur est " & Me.DropDownList1.SelectedValue

End Sub

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load

If Not Page.IsPostBack Then

End If

End Sub

Private Sub BindData()

Me.DropDownList1.DataSource = "A,B,C,D,E,F,G,H,I".Split(","c)

Me.DropDownList1.DataBind()

End Sub