private void btnTimDoan_Click(object sender, EventArgs e)
        {
            DoanBUS dbus = new DoanBUS();
            eDoan   doan = new eDoan();

            doan               = dbus.getdoan_sdt(txtSdtDoan.Text.Trim());
            txtTenDoan.Text    = doan.TenDoan;
            txtDiaChi.Text     = doan.DiaChi;
            txtTruongDoan.Text = doan.MaTruongDoan;
        }
        private void btnTim_Click(object sender, EventArgs e)
        {
            DoanBUS dbus = new DoanBUS();
            eDoan   doan = new eDoan();

            doan = dbus.getdoan_sdt(txtSdt.Text.Trim());
            txtTruongDoan.Text = doan.MaTruongDoan;
            txtTenDoan.Text    = doan.TenDoan;
            loadThuePhong_Doan();
        }
        private void btnLuu_Click(object sender, EventArgs e)
        {
            ThuePhongBUS tpbus = new ThuePhongBUS();
            PhongBUS     pbus  = new PhongBUS();
            LoaiPhongBUS lpbus = new LoaiPhongBUS();
            eThuePhong   tp    = new eThuePhong();
            NhanVienBUS  nvbus = new NhanVienBUS();
            DoanBUS      dbus  = new DoanBUS();
            //Tao Doan
            eDoan doan = new eDoan();

            doan.DiaChi       = txtDiaChi.Text.Trim();
            doan.MaTruongDoan = txtTruongDoan.Text.Trim();
            doan.TenDoan      = txtTenDoan.Text.Trim();
            doan.Sdt          = txtSdtDoan.Text.Trim();
            if (dbus.getdoan_sdt(txtSdtDoan.Text.Trim()) == null)
            {
                int kqTaoDoan = dbus.insertDoan(doan);
            }
            tp.MaNV   = nvbus.getmaNV_byEmail(emailNV);
            tp.MaDoan = dbus.getId_ByTenDoan(txtTenDoan.Text.Trim()); //ma doan
            int soLuongP = 0;

            for (int i = 0; i < gridViewLoaiPhong.RowCount; i++)
            {
                soLuongP += Convert.ToInt32(gridViewLoaiPhong.GetRowCellValue(i, gridViewLoaiPhong.Columns[3]));
            }

            tp.SoLuongPhong = soLuongP;
            tp.TrangThai    = false;
            TimeSpan          gioVao = new TimeSpan(DateTime.Now.Hour, DateTime.Now.Minute, DateTime.Now.Second);
            TimeSpan          gioRa  = new TimeSpan(14, 00, 00);
            int               a      = tpbus.insertThuePhong(tp);
            eChiTietThuePhong cttp   = new eChiTietThuePhong();

            if (a == 1)
            {
                ChiTietThuePhongBUS cttpbus = new ChiTietThuePhongBUS();
                foreach (eKhachHang item in ls)
                {
                    cttp.MaThue    = tpbus.getMaThueCuoi();
                    cttp.MaKhach   = item.MaKH;
                    cttp.MaPhong   = pbus.maPhong_byTen(item.SoPhong);
                    cttp.NgayRa    = Convert.ToDateTime(dtmNgayRa.Text).Date;
                    cttp.NgayVao   = DateTime.Now.Date;
                    cttp.GioRa     = gioRa;
                    cttp.GioVao    = gioVao;
                    cttp.TrangThai = false;
                    cttpbus.insertCTTP(cttp);
                    ePhong p = new ePhong();
                    p.MaPhong   = pbus.maPhong_byTen(item.SoPhong);
                    p.TinhTrang = true;
                    int soPhong = 0;
                    foreach (var kh in ls)
                    {
                        if (kh.SoPhong.Equals(item.SoPhong))
                        {
                            soPhong++;
                        }
                    }
                    p.SoNgHienTai = soPhong;
                    pbus.updateTinhTrangPhong(p);
                }
                MessageBox.Show("Đặt phòng thành công");
                this.Close();
            }
            else
            {
                MessageBox.Show("Không thành công");
                return;
            }
        }