i'm creating a checkboxlist, i need to add values, not only labels, as i need to pass a different value when the ckeckbox is checked.

Hello experts,
my problem is as follow,
i need to fill a checkboxlist with id values and labels differents,
for example Mr.DADA has an account_id = 1111,   i need to see DADA as checkbox label,
but i need to pass the id value 1111.

HTML:
---------------------------------------------------------------------------------------------------------
                <td valign="top">
                  <asp:panel id="panAccount" runat="server">
                        <asp:Label id="lbHeaderAccount" runat="server"> </asp:Label>
                        <asp:CheckBoxList id="chklAccounts_" runat="server" ></asp:CheckBoxList>
                  </asp:panel>
            </td>

CODE BEHIND in order to populate the ckeckboxlist.
----------------------------------------------------------------------------------------------------------
...
User_ = new User(....);
DataTable dt = ApplicationConfiguration.SystemConfiguration.AccountsRepository.FetchSubAccountFromAccountID_ToDT(User_.Account_id);
                  
                  foreach(DataRow myRow in dt.Rows)
                  {
                        chklAccounts_.Items.Add(myRow["lastname"].ToString());    < --- label for the checkbox.
                                chklAccounts_.Items.  ---- myRow["id"] ----          ;                 <--- how to add a value that i will recover on postback???????
                  }


on postback, preparing an arrayList with the id values.
---------------------------------------------------------------------------------

if(IsPostBack)
{
       foreach(ListItem item in this.chklAccounts_.Items)
      {
                if(item.Selected == true)
              {
                  alAccountsToExport.Add(.....???....)   <--- how to recover the id ??????????.
            }
      }
     ........

i need to fill the lines with question mark.
thanks in advance.