The Update method of the SPListItem class updates the database with changes made to the list item.
The Update method returns a Microsoft.SharePoint.SPException exception if the list item has been modified since it was created. For instance, this exception is returned if the code returns an SPListItem object but code in a different HTTP request has updated the item previously. This exception is also raised when the data supplied for updating an item is invalid.
Note When a document is checked out from a document library, its metadata cannot be modified using the Update method.
For information about specific data formats used for list items in Windows SharePoint Services, see the SPListItem class.
Platforms: Microsoft Windows Server 2003
Security: Code Access Security