// 添加房间
        private void btnAddRoom_Click(object sender, System.EventArgs e)
        {
            FrmRoomAdd frmRoomAdd = new FrmRoomAdd();

            if (frmRoomAdd.ShowDialog() == DialogResult.OK)        // 打开选择房间对话框
            {
                List <Room> rooms = frmRoomAdd.Tag as List <Room>; // 获取选择的房间信息
                foreach (Room room in rooms)                       // 插入选择的房间
                {
                    dgvRoom.Rows.Add(
                        room.RoomNo,
                        room.RoomType,
                        room.BedNum);
                }
            }
        }
        // 添加房间
        private void btnAddRoom_Click(object sender, EventArgs e)
        {
            FrmRoomAdd frmRoomAdd = new FrmRoomAdd();

            if (frmRoomAdd.ShowDialog() == DialogResult.OK)        // 打开选择房间对话框
            {
                List <Room> rooms = frmRoomAdd.Tag as List <Room>; // 获取选择的房间信息
                foreach (Room room in rooms)                       // 插入选择的房间
                {
                    lvSelectedRooms.Items.Add(new ListViewItem(new string[]
                    {
                        room.RoomNo,
                        room.RoomType,
                        room.BedNum.ToString()
                    }));
                }
            }
        }