void Page_Load ( Object src, EventArgs e ) {
   if ( !IsPostBack ) {
      ArrayList myListItems = new ArrayList ( );
      myListItems.Add ( "Item 1" );
      myListItems.Add ( "Item 2" );
      myListItems.Add ( "Item 3" );
      myListItems.Add ( "Item 4" );
      myListItems.Add ( "Item 5" );

      ListBox myList = new ListBox ( );
      Page.Controls.Add ( myList )
      myList.DataSource = myListItems;
      myList.DataBind ( );
   }
}

Sub Page_Load ( src As Object, e As EventArgs )
   If Not IsPostBack Then
      Dim myListItems As New ArrayList ( )
      myListItems.Add ( "Item 1" )
      myListItems.Add ( "Item 2" )
      myListItems.Add ( "Item 3" )
      myListItems.Add ( "Item 4" )
      myListItems.Add ( "Item 5" )

      Dim myList As New ListBox ( )
      Page.Controls.Add ( myList )
      myList.DataSource = myListItems
      myList.DataBind ( )
   End If 
End Sub