private void detach_PersonActivities_ModifyPersonId(PersonActivity entity)
 {
     this.SendPropertyChanging("PersonActivities_ModifyPersonId");
     entity.Person_ModifyPersonId = null;
 }
 private void detach_PersonActivities(PersonActivity entity)
 {
     this.SendPropertyChanging("PersonActivities");
     entity.RbActivity = null;
 }
 private void attach_PersonActivities_MasterId(PersonActivity entity)
 {
     this.SendPropertyChanging("PersonActivities_MasterId");
     entity.Person_MasterId = this;
 }