|BcfRowDeleteException||cannot delete row. + ex.Message|
|InvalidOperationException||GetRowState is Created or UndoneAdded|
dataset is locked; e.g. BcfDataSet is just switching the current transaction or is undoing/redoing.
do not call this method e.g. from inside BcfFunctionBase, BcfValidatorBase nor IBcfUndoRedoItemoperation failed due to a relation conflict. see inner exception BcfRelationConstraintException or BcfKeyCellUpdateException