Here is my problem. I have a datalist with add/delete javascript routines to insert/remove new rows (html) dynamically into the resulted html table datalist rendered . The new html row contain 2 text boxes that is created from a cloneNode method of an existing row in the table. I also renumber the text box so they have the unique id and name with increment ctrl number (from dltEnums__ctl0_txtLower to dltEnums__ctl1_txtLower). But when there is a post back, the server won't recognize the new inserted rows. Any help or hint is appreciated. Lance