public PhieuMuonSach LayPhieuMuonDGV(DataGridViewRow row) { PhieuMuonSach item = new PhieuMuonSach(); if (row.Cells[1].Value != null) { item.MaNguoiMuon = row.Cells[0].Value.ToString(); } else { return(item); } item.MaNguoiMuon = "none"; item.NgayMuonSach = Convert.ToDateTime(01 / 01 / 01); item.HanTraSach = Convert.ToDateTime(01 / 01 / 01); return(phieuMuonDAL.TimKiemPhieuMuon(item)[0]); }