Thanks Decker for replying,

I have another version of the project with object data source, which works ok, but I really need to update more that one table at a time,
that is why I am trying to using the row updating and programmatic binding. Do you know of a way to update more that one table with object data source; I didn't think it was possible? I will eventually have item template columns in gridview which call from a second table adapter, although can't say it's going well so far...