public TuaDeBll()
{
db = new QuanLyThueDiaDataContext();
}
public NhatKyGhinoDLL()
{
db = new QuanLyThueDiaDataContext();
}
public LoaiDiaDLL()
{
db = new QuanLyThueDiaDataContext();
}
public KhachHangBLL()
{
db = new QuanLyThueDiaDataContext();
}
public HangDoiDLL()
{
db = new QuanLyThueDiaDataContext();
}
public LoginBLL()
{
db = new QuanLyThueDiaDataContext();
}
public DiaBLL()
{
db = new QuanLyThueDiaDataContext();
}
