... methodBusinessBase class, 126, 128editable root business objects, 386implementing Project class, 419–420implementing ProjectResource class, 438read-only business objects, 400AddBusinessRules ... root business objects, 387implementing Project class, 420, 422Cancel buttonProjectEdit saving data, 510, 511CancelEdit methodBusinessBase class, 105 , 119–120BusinessListBase class, 105 deleting ... 59–64classesBindableBase, 67, 100 104 BindingList, 67BindingSourceRefresh, 306–307, 505BrokenRule, 69BrokenRulesCollection, 69, 137–138BusinessBase, 60–62, 112–130, 143–146BusinessListBase, 62, 146–159BusinessPrincipalBase,...