questo è un esempio
codice:
<%@ Page Language="VB" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs)
If Not Me.IsPostBack Then
Dim fs As String() = Directory.GetFiles("C:\dati\ProveNikon\images", "*.*", IO.SearchOption.TopDirectoryOnly)
Me.DropDownList1.DataSource = fs
Me.DropDownList1.DataBind()
End If
End Sub
Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs)
Dim valoreSelezionato As String = Me.DropDownList1.SelectedValue
Me.Label1.Text = valoreSelezionato
End Sub
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>Pagina senza titolo</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:DropDownList ID="DropDownList1" runat="server" AppendDataBoundItems="true" >
<asp:ListItem Value="" Text="Scegli il file"></asp:ListItem>
</asp:DropDownList>
</div>
<asp:Button ID="Button1" runat="server" Text="Button" OnClick="Button1_Click" />
<asp:Label ID="Label1" runat="server" Text="" EnableViewState="false"></asp:Label>
</form>
</body>
</html>
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