public HOADONBLL()
{
db = new ModelDBOnlineShopDbConText();
}
public SANPHAMBLL()
{
db = new ModelDBOnlineShopDbConText();
}
public DANHMUCBLL()
{
db = new ModelDBOnlineShopDbConText();
}
public NGUOIDUNGBLL()
{
db = new ModelDBOnlineShopDbConText();
}
