private void CRSanPhamHetHang_Load(object sender, EventArgs e)
{
SanPhamBUS sanphambus = new SanPhamBUS();
List <SanPhamDTO> lssanphamdto = new List <SanPhamDTO>();
lssanphamdto = sanphambus.DanhSachSanPhamHetHang();
ReportDocument rp = new ReportDocument();
rp.Load(@"C:\Users\Ron\Desktop\Tốt Nghiệp\CHTapHoa\CHTapHoa\Reports\SanPhamHetHang.rpt");
rp.SetDataSource(lssanphamdto);
crystalReportViewer1.ReportSource = rp;
this.crystalReportViewer1.Show();
this.crystalReportViewer1.RefreshReport();
}