Thanks victor, but when i passing dataset as my parameter, it's needless to create UPDATECommand, it will automatically create command and update for me directly because i using CommandBuilder, thus i think can i pass XML as my parameter but do the same job without bundle of coding?

i try to develop a data tier that suitable for all my tables(some have 2 even more 3 primary key). Thus, i try not to sepcify every single UPDATEcommand for every table, on the other hand, i try to develop a single common function that can update any table in my database. Any idea victor? sorry for my poor english.

NG