if you have bound the datagrid to the datasource and have insert, update and delete commands in your data source just set allowedit and allowdelete = true for the gridview and it will take care of it all for you. You need something seperate to add and i use the detailsview with defaultmode set to insert and bound to the same datasource.
If you want more control over the gridview when edititng etc change each bound field into a template field and then change the item, edititem and any other templates you want.
