partial void Deleteyearreport_cost(yearreport_cost instance);
partial void Updateyearreport_cost(yearreport_cost instance);
private void detach_yearreport_costs(yearreport_cost entity) { this.SendPropertyChanging(); entity.yearreport = null; }
partial void Insertyearreport_cost(yearreport_cost instance);
private void attach_yearreport_costs(yearreport_cost entity) { this.SendPropertyChanging(); entity.cost = this; }