Tran Quoc Thang wrote: I've followed a tutorial in Codeproject.com to make an asp.net page What tutorial is that. Ask the question there.... and try for answer from the author of that article.. Else post more information about your problem There is nothing new under the sun, But there are lots of old things we don't know. - Ambrose Bierce

Did u try to add the datagrid with the checkboxes there??? Where r u struck with that?? There is nothing new under the sun, But there are lots of old things we don't know. - Ambrose Bierce

:cool: I love .Net too !!! Never comment ur code. If it was hard to write, it should be hard to understand !!!