This is one of those things that I always forget about and end up having to debug. (Also for those planning to do MCTS, I guarantee that there will be a question about this one ;) ) While it is technically possible to databind to a SPListItemCollection, when you try to refer to any of the SPListItem fields by name you’ll end up with an error similar to this: [ArgumentException: Value does not fall within the expected range.] Microsoft.SharePoint.SPFieldMap.GetColumnNumber(String strFieldName) +161 Microsoft.SharePoint.SPListItemCollection.GetRawValue(String fieldname, Int32 iIndex) +56...