how to reference datalist in pre render?

hi,
i have code in item databound, but i want to move it to prerender... how do i reference the controls correctly in prerender? in item databound i use e.item....?, what do i use in prerender?:
protected void DataList1_ItemDataBound(object sender, DataListItemEventArgs e)
    {

       
            Label Label55 = e.Item.FindControl("Label55") as Label;
            Label Label56 = e.Item.FindControl("Label56") as Label;

...