hoteluserbll.cs

酒店管理 主要实现了基础设施管理（客房管理、客房类型管理）、业务管理（入住、退房、数据库切换） 本系统简单明了,适合初学者学习,采用三层加抽象工厂实现

using System;
using System.Collections.Generic;
using System.Text;

using IDAL;
using Factory;
using Model;
using System.Data;
//５1ａsｐｘ
namespace BLL
{
    public class HotelUserBLL
    {
        private readonly IHotelUser userOp = null;

        public HotelUserBLL()
        { 
            userOp = AbstractFactory.GetFactory().CreateHotelUser();
        }

        /// <summary>
        /// 按用户名得到用户密码
        /// </summary>
        /// <param name="name"></param>
        /// <returns></returns>
        public string GetUserPasswordByUserName(string name)
        {
            try
            {
                return userOp.GetUserPasswordByUserName(name);
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }

        /// <summary>
        /// 添加用户
        /// </summary>
        /// <param name="user"></param>
        /// <returns></returns>
        public bool AddUser(HotelUser user)
        {
            try
            {
                return userOp.AddUser(user);
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }

        /// <summary>
        /// 得到所有的用户信息
        /// </summary>
        /// <returns></returns>
        public DataTable GetAllUsers()
        {
            IList<HotelUser> lists = new List<HotelUser>();
            try
            {
                lists = userOp.GetAllUsers();
            }
            catch (Exception ex)
            {
                throw ex;
            }
            return GetTable(lists);
        }

        /// <summary>
        /// 分解IList得到DataTable
        /// </summary>
        /// <param name="hotelUser"></param>
        /// <returns></returns>
        private DataTable GetTable(IList<HotelUser> hotelUser)
        {
            DataTable table = new DataTable("HotelUser");
            if (hotelUser != null)
            {
                try
                {
                    table.Columns.Add("UserName");
                    table.Columns.Add("Password");

                    foreach (HotelUser temp in hotelUser)
                    {
                        object[] num = new object[2];
                        num[0] = temp.UserName as object;
                        num[1] = temp.PassWord as object;
                        DataRow row = table.NewRow();
                        row.ItemArray = num;
                        table.Rows.Add(row);
                    }
                }
                catch (Exception ex)
                {
                    throw new Exception(ex.Message + ex.StackTrace);
                }
            }
            return table;
        }
    }
}