private void HienThiPhieuUSer()
        {
            NguoiMuonSach nms = new NguoiMuonSach();

            nms.Id = int.Parse(this.iddg);
            NguoiMuonSachBLL     nmsbll    = new NguoiMuonSachBLL();
            List <NguoiMuonSach> dsngmsach = nmsbll.TimNguoiMuonTheoMa(nms);

            foreach (NguoiMuonSach tennms in dsngmsach)
            {
                this.ten = tennms.HoTen;
            }
            PhieuMuonSachDAO pms = new PhieuMuonSachDAO();

            pms.TenNguoiMuonSach = ten;
            PhieuMuonSachBLL        pmsdgbll = new PhieuMuonSachBLL();
            List <PhieuMuonSachDAO> dsphieu  = pmsdgbll.PhieuCuaDG(pms);

            lvPhieuMuonUser.Items.Clear();
            foreach (PhieuMuonSachDAO ctpms in dsphieu)
            {
                ListViewItem lvi = new ListViewItem(ctpms.MaPhieuMuon + "");
                lvi.SubItems.Add(ctpms.TenSach);
                lvi.SubItems.Add(ctpms.TrangThai);
                lvi.SubItems.Add(ctpms.NgayMuon.ToString());
                lvi.SubItems.Add(ctpms.NgayDuKienTra.ToString());
                lvi.SubItems.Add(ctpms.NgayTraSach.ToString());
                lvPhieuMuonUser.Items.Add(lvi);
            }
        }
        private void btnTimMa_Click(object sender, EventArgs e)
        {
            errorTimMa.SetError(txtTimMa, "");
            if (txtTimMa.Text == "")
            {
                errorTimMa.SetError(txtTimMa, "Vui lòng nhập mã càn tìm");
                return;
            }
            errorIntTimMa.SetError(txtTimMa, "");
            if (!txtTimMa.Text.All(char.IsDigit))
            {
                errorTimMa.SetError(txtTimMa, "Mã là số");
                return;
            }
            NguoiMuonSach nms = new NguoiMuonSach();

            nms.Id = int.Parse(txtTimMa.Text);

            NguoiMuonSachBLL     ngmsachbll = new NguoiMuonSachBLL();
            List <NguoiMuonSach> dsngmsach  = ngmsachbll.TimNguoiMuonTheoMa(nms);

            lvNguoiMuonSachDS.Items.Clear();
            foreach (NguoiMuonSach nmsbll in dsngmsach)
            {
                ListViewItem lvi = new ListViewItem(nmsbll.Id + "");
                lvi.SubItems.Add(nmsbll.HoTen);
                lvi.SubItems.Add(nmsbll.SoDienThoai);
                //lvi.SubItems.Add(nms.BieuHien);
                lvi.SubItems.Add(nmsbll.DiaChi);
                lvi.SubItems.Add(nmsbll.Email);
                lvi.SubItems.Add(nmsbll.NamSinh + "");
                lvNguoiMuonSachDS.Items.Add(lvi);
            }
        }