private void detach_tbDevices(tbDevice entity)
 {
     this.SendPropertyChanging();
     entity.tbUser = null;
 }
 private void attach_tbDevices(tbDevice entity)
 {
     this.SendPropertyChanging();
     entity.tbUser = this;
 }
 partial void UpdatetbDevice(tbDevice instance);
 partial void DeletetbDevice(tbDevice instance);
 partial void InserttbDevice(tbDevice instance);