private void detach_dnn1_UserAuthentications(dnn1_UserAuthentication entity)
 {
     this.SendPropertyChanging();
     entity.dnn1_User = null;
 }
 partial void Updatednn1_UserAuthentication(dnn1_UserAuthentication instance);
 partial void Deletednn1_UserAuthentication(dnn1_UserAuthentication instance);
 partial void Insertdnn1_UserAuthentication(dnn1_UserAuthentication instance);