private void detach_Dats(Dat entity)
{
this.SendPropertyChanging();
entity.TinBai = null;
}
private void attach_Dats(Dat entity)
{
this.SendPropertyChanging();
entity.TinBai = this;
}
partial void UpdateDat(Dat instance);
partial void DeleteDat(Dat instance);
partial void InsertDat(Dat instance);
