public QUANLYKHACHSAN.BusinessObject.PhieuThuePhongInFo LayPhieuThue(String id) { DataTable tbl = data.LayPhieuDangKy(id); PhieuThuePhongInFo ph = null; KhachHangControl khctrl = new KhachHangControl(); if (tbl.Rows.Count > 0) { ph = new PhieuThuePhongInFo(); ph.MaPhieuThue = Convert.ToString(tbl.Rows[0]["MaPhieuThue"]); ph.MaKhachHang = khctrl.LKH(Convert.ToString(tbl.Rows[0]["MaKhachHang"])); ChiTietPhieuThueControl ctrl = new ChiTietPhieuThueControl(); ph.ChiTiet = ctrl.ChiTietPhieuThue(ph.MaPhieuThue); } return(ph); }