public DataTable LayTheoMaHoaDon()
{
String strLayhd = "select MaHD,TenHD from HoaDon";
return(DataProvider._ExCuteDataTable(strLayhd));
}
public DataTable LayTheoKh()
{
String strLayKh = "select MaKH,TenKH from KhachHang";
return(DataProvider._ExCuteDataTable(strLayKh));
}
public DataTable LayTheoTacGia()
{
String strTacGia = "select MaTG,TenTG from TacGia";
return(DataProvider._ExCuteDataTable(strTacGia));
}
public DataTable LayTheoNxb()
{
String strNxb = "select MaNXB,TenNXB from NXB";
return(DataProvider._ExCuteDataTable(strNxb));
}
public DataTable LayTheoMaTheLoai()
{
String strTheLoai = "select MaTL,TenTheLoai from TheLoai";
return(DataProvider._ExCuteDataTable(strTheLoai));
}