[DotNetDevelopment] [VB.NET, ASP.NET] databind() and appending multiple datasets...

[Alfaking]

Hi everybody,
here is my question.

I have to fill a listbox with a dataset, that comes from a sql
statement
this is part of a loop, in case of multiple selection coming from
another listbox.

the point is that when I use the DATABIND instruction, the listbox is
updated with only the last dataset, loosing all the  existing rows.
I need to do that databind because I need to keep the datavalue, for
following selections...
All I need is to keep on the screen all the datasets: is there any
APPEND or any useful instruction ?

here is part of the code----------
loop in the first listbox

For i = 0 To firstListbox.Items.Count - 1
If firstListbox.Items(i).Selected Then
  ZonaSel = firstListbox.Items(i).Value
  CaricaVie(ZonaSel, GiroSel)
End If

after the dataset is filled.

          Listbox.DataSource = DS2.Tables("Dati")
          Listbox.DataTextField = "Column1_name"
          Listbox.DataValueField = "Column_name"
          Listbox.DataBind() <<------ here !!!

Thanks