datgridview vb.net 2005

how to update,add and delete database tables by using datagridview
which uses untyped dataset.


do i need to iterate each cell value ,add it to a datarow and update
db like v did in vb6(H/flexgrid) ? (i miss it a lot)


here i am intending to use 3 button_click for add,update and delete
database.
apart from uniq id, the state field is also uniq .entry by used must
be validated before add/update.