Problem: ObjectDataSource could not find a non-generic method 'Update' that has parameters: ...., original_Id. Take steps: 1) Change ObjectDataSource : OldValuesParameterFormatStr... to OldValuesParameterFormatStr... 2) Remove original_Id references from : (a) update stored proc (if automatically generated), (b) dataset (XSD) other links: http://geekswithblogs.net/c... ......