下面是用户注册系统开发的三层构架实例：数据库基类采用上面提供的代码。

1、用户注册模块数据层开发：
using System;
using System.Data;
using System.Data.SqlClient;
using HaiSky.HtJob;
using System.Xml;
namespace HaiSky.HtJob.Accounts.AccountsData
{
    public class User : HaiSky.HtJob.HaiSkyDbObject
    {
        public User(string newConnectionString) : base(newConnectionString)
        {//直接路由连接字符串}
        public int Create(string user_nm,string user_pwd)
        {
            int rowsAffected;
            SqlParameter[] parameters = {new SqlParameter("@user_nm",SqlDbType.Char,16),
                                        new
SqlParameter("@user_pwd",SqlDbType.Char,16)};
            parameters[0].Value = user_nm;
            parameters[1].Value = user_pwd;
            parameters[2].Direction = ParameterDirection.Output;
            try
            {
                RunProcedure("IF_user_info",parameters,out rowsAffected);
            }
            catch
            {    }
            return (int)parameters[2].Value;
        }
    }
}

2、用户注册商务层开发：
using System;
using System.Configuration;
using HaiSky.HtJob.Accounts.AccountsData;
namespace HaiSky.HtJob.Accounts.AccountBusiness
{
    public class User : HaiSky.HtJob.HaiSkyBizObject
    {
        int userID;
        string userName;
        string userPwd;
        string strConn;
        public User()
        {
            strConn = ConfigurationSettings.AppSettings["strConn"];
        }
        public int Careate()
        {
            AccountsData.User dataUser = new AccountsData.User(strConn);
            userID = dataUser.Create(userName,userPwd);
            return userID;
        }
        public int UserID
        {
          &n