private void frmHoaDonBanHang_Load(object sender, EventArgs e)
{
ReportDocument rp = new ReportDocument();
rp.Load(@"C:\Users\Ron\Desktop\Tốt Nghiệp\CHTapHoa\CHTapHoa\Reports\HoaDonBanHang.rpt");
List <HoaDonXuatDTO> dsHDX = new List <HoaDonXuatDTO>();
HoaDonXuatDTO hdx = _hdxBus.LayHDTheoMa(MaHD);
dsHDX.Add(hdx);
rp.SetDataSource(dsHDX);
List <CTHDXuatDTO> dsSanPham = _cthdxBus.DanhSachChiTietHoaDonXuat(MaHD);
rp.Subreports[0].SetDataSource(dsSanPham);
crystalReportViewer1.ReportSource = rp;
this.crystalReportViewer1.Show();
this.crystalReportViewer1.Refresh();
}