usersbusiness.cs

本系统是基于三层架构和Ajax控件结合的酒店预订系统

using System;
using System.Collections.Generic;
using System.Text;
using System.Data;
using System.Reflection;
using DBaoBookingManagement.DataAccess;
using DBaoBookingManagement.Entity;

namespace DBaoBookingManagement.BusinessLogic
{
    /// <summary>
    /// 对会员进行业务逻辑操作
    /// </summary>
    public class UsersBusiness : Business
    {
        private UsersAccessor ua = new UsersAccessor();

        private static UsersBusiness instance = null;
        private UsersBusiness() { }//私有构造函数

        /// <summary>
        /// 获取UsersBusiness对象
        /// </summary>
        /// <returns></returns>
        public static UsersBusiness GetInstance()
        {
            if (instance == null)
            {
                instance = new UsersBusiness();
            }
            return instance;
        }

        /// <summary>
        /// 增加会员
        /// </summary>
        /// <param name="userName"></param>
        /// <param name="pwd"></param>
        /// <param name="realName"></param>
        /// <param name="sex"></param>
        /// <param name="iDCard"></param>
        /// <param name="phoneNum"></param>
        /// <param name="goal"></param>
        /// <param name="userTypeId"></param>
        /// <returns></returns>
        public bool Insert(string userName,string pwd,string realName,string sex,string iDCard,
            string phoneNum,int goal,int userTypeId,int recId)
        {
            Users entity = new Users();
            entity.UserName = userName;
            entity.Pwd = pwd;
            entity.RealName = realName;
            entity.Sex = sex;
            entity.IDCard = iDCard;
            entity.PhoneNum = phoneNum;
            entity.Goal = goal;
            entity.UserTypeId = userTypeId;
            entity.RecId = recId;
            try
            {
                return ua.Insert(entity);
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }

        /// <summary>
        /// 修改会员
        /// </summary>
        /// <param name="id"></param>
        /// <param name="userName"></param>
        /// <param name="pwd"></param>
        /// <param name="realName"></param>
        /// <param name="sex"></param>
        /// <param name="iDCard"></param>
        /// <param name="phoneNum"></param>
        /// <param name="goal"></param>
        /// <param name="userTypeId"></param>
        /// <returns></returns>
        public bool Update(int id,string userName,string pwd,string realName,string sex,
            string iDCard,string phoneNum,int goal,int userTypeId,int recId)
        {
            Users entity = new Users();
            entity.UserId = id;
            entity.UserName = userName;
            entity.Pwd = pwd;
            entity.RealName = realName;
            entity.Sex = sex;
            entity.IDCard = iDCard;
            entity.PhoneNum = phoneNum;
            entity.Goal = goal;
            entity.UserTypeId = userTypeId;
            entity.RecId = recId;
            try
            {
                return ua.Update(entity);
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }

        /// <summary>
        /// 根据会员ID删除会员
        /// </summary>
        /// <param name="id"></param>
        /// <returns></returns>
        public bool DeleteById(int id)
        {
            try
            {
                return ua.DeleteById(id);
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }

        /// <summary>
        /// 根据会员ID查询会员
        /// </summary>
        /// <param name="id"></param>
        /// <returns></returns>
        public Users QueryById(int id)
        {
            Users entity = null;
            try
            {
                DataTable dt = ua.QueryById(id);
                if (dt.Rows.Count > 0)
                {
                    entity = new Users();
                    PropertyInfo[] props = typeof(Users).GetProperties();
                    for (int j = 0; j < props.Length; j++)
                    {
                        string columnName = props[j].Name;
                        object value = dt.Rows[0][columnName];
                        props[j].SetValue(entity, value, null);
                    }
                }
                return entity;
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }

        /// <summary>
        /// 根据用户名查询会员
        /// </summary>
        /// <param name="userName"></param>
        /// <returns></returns>
        public Users QueryByUserName(string userName)
        {
            Users entity = null;
            try
            {
                DataTable dt = ua.QueryByUserName(userName);
                if (dt.Rows.Count > 0)
                {
                    entity = new Users();
                    PropertyInfo[] props = typeof(Users).GetProperties();
                    for (int j = 0; j < props.Length; j++)
                    {
                        string columnName = props[j].Name;
                        object value = dt.Rows[0][columnName];
                        props[j].SetValue(entity, value, null);
                    }
                }
                return entity;
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }

        /// <summary>
        /// 查询所有会员
        /// </summary>
        /// <returns></returns>
        public Users[] QueryAll()
        {
            Users[] entityList = null;
            try
            {
                DataTable dt = ua.QueryAll();
                entityList = FillEntityList(entityList, dt);
                return entityList;
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }

        //填充实体类列表
        private Users[] FillEntityList(Users[] entityList, DataTable dt)
        {
            if (dt.Rows.Count > 0)
            {
                entityList = new Users[dt.Rows.Count];

                //用反射给实体类赋值
                for (int i = 0; i < entityList.Length; i++)
                {
                    Users entity = new Users();
                    PropertyInfo[] props = typeof(Users).GetProperties();
                    for (int j = 0; j < props.Length; j++)
                    {
                        string columnName = props[j].Name;
                        object value = dt.Rows[i][columnName];
                        props[j].SetValue(entity, value, null);
                    }
                    entityList[i] = entity;
                }
            }
            return entityList;
        }
    }
}